Resolution 2005-101
RESOLUTION NO. 2005- 101
A RESOLUTION BY THE BOARD OF COUNTY COMMISSIONERS,
COLLIER COUNTY, FLORIDA, TO ADOPT THE REVISED
NEIGHBORIIOOIl TRAFFIC MANAGEMENT PROGRAM MANUAL.
WHEREAS, based on the research and recommendations of the Collier County/Naples
Metropolitan Planning Organization and the Traffic Calming Task Force, the Board of County
Commissioners of Collier County, Florida, pursuant to Resolution 95-608, adopted and implemented the
Collier County Neighborhood Traffic Management Program (the "Program"), finding that this Program
contained policies, procedures and techniques that would correct neighborhood traffic problems; and
WHEREAS, this Program included a Neighborhood Traffic Management Program Manual
created by the Traffic Calming Task Force in 1995; and
WHEREAS, since its adoption and implementation, the Program and the 1995 Neighborhood
Traffic Management Program Manual have inured to the benefit of the people of Collier County; and
WHEREAS, the 2004 Traffic Calming Committee has prepared an updated version of the
original 1995 Neighborhood Traffic Management Program Manual; and
WHEREAS, both the 2004 Traffic Calming Committee and Collier County staff recommend that
the Board of County Commissioners approved for immediate use the updated Neighborhood Traffic
Management Program Manual and that this updated manual supercede and replace the 1995
Neighborhood Traffic Management Program Manual.
NOW, THEREFORE, BE IT RESOLVED BY THE BOARD OF COUNTY COMMISSIONERS
OF COLLIER COUNTY, FLORIDA, that the attached Neighborhood Traffic Management Program
Manual is hereby authorized for immediate implementation and distribution and shall be henceforth used
by the Collier County Transportation Services Division in place of the 1995 Manual, use of which is
hereby discontinued.
This Resolution adopted after motion, second, and majority vote favoring same, this day
of
,2005.
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BOARD OF COUNTY COMMISSIONERS
COLLIER COUNTY, FLORIDA
By: ~W. ~
FRED W. COYLE, CHAIRMA
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. Jeffr
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Agenda Item No. JOA
February 22, 2005
Page 4 of 54
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Agenda Item No. 10A
February 22, 2005
Page 5 of 54
Table of Contents
Introduction............................. ............................... 3
Goals, Objectives, and Policies ..... ..............................7
Application Requirements ............ ..............................9
Procedures.............................. .............................10
Techniques.............................. .............................16
Application Forms ..................... .............................47
Appendix................................ .............................50
Acknowledgments ..................... .............................51
Collier County Neighborhood Traffic Management Program NTMP 2
Agenda Item No. 10A
February 22, 2005
Page 6of54
n t�c�d
NTMP
Neighborhood Traffic
Management Program
The Mission of the Traffic Calming Program is to improve community safety and to preserve
and enhance Collier County neighborhoods by working with residents to design and imple-
ment solutions to the negative impacts created by automobile traffic on neighborhood
streets.
The Neighborhood Traffic Management Program (NTMP) was created in direct response to a seri-
ous problem that blankets Collier County. For a period of five years Collier County did not invest in
major improvements or additions to the roadway system. Over time, with no new capacity available,
the arterial roadway system became maximized by the increased demand. Additionally, due to ex-
isting roadway geometry, there were virtually no collector roadways to mitigate the increase in de-
mand. The resulting synergy forced mainstream traffic onto local neighborhood roads, using them
as throughways. NTMP was developed to discourage traffic from cutting through and using local
residential streets. (The program was not designed as a regulatory arm for neighborhood control of
internal traffic, which would then become an enforcement issue).
Specifically, the Collier County/Naples Metropolitan Planning Organization (MPO) and the Traffic
Calming Task Force created the Collier County/Naples Neighborhood Traffic Management Program
(NTMP). The MPO staff' and the Task Force then formed the NTMP, incorporating a Traffic Calming
Committee and a process for identifying, qualifying and addressing problems related to excessive
traffic volumes, motorists cutting through residential areas, speeding and safety on local streets.
The authority to implement Traffic Calming comes to us from the following sources:
1. Collier County Growth Management Plan, Transportation Element (III) E. Goals
and Objective & Policies.
(111) Objective 9: The County shall encourage neighborhood involvement and safe and
pleasant conditions for the residents, pedestrians, bicyclists and motorists on neighbor-
hood streets, not classified as arterials or collectors, through the implementation of the
Collier County Neighborhood Traffic Management Program (NTMP).
2. Board of County Commissioners Resolution 95 -608, which establishes the
Neighborhood Traffic Management Program.
Collier County Neighborhood Traffic Management Program NTMP 3
Agenda item No. 10A
February 22, 2005
Page 7 of 54
Introduction Continued:
3. The Unified Land Development Code (ULDC), Chapter 4, Subdivision Design Require-
ments. § 4.03.05 (A) Blocks. The length, width and shape of blocks shall be determined
with due regard to:
(4.) Where special topographical conditions exist, block lengths greater than 660
feet shall be approved by the County Manager or designee pursuant to
procedures set forth in Chapter 90. Traffic calming devices, as approved in
the Neighborhood Traffic Management Program, shall be provided in block
lengths greater than 660 feet.
Chapter 6. Infrastructure Improvements and Adequate Public Facilities Requirements.
§ 6.06.00 Transportation System Standards. § 6.06.01 Street System Requirements.
(G.) Use of local streets by cut- through traffic shall be discouraged, using meth-
ods (like traffic calming) that do not compromise connectivity or reduce the
number of access points to the subdivision.
The NTMP Project Manager reviews requests for traffic calming, which come from a variety of
sources: Citizens, Home Owners Associations (HOA), City and County Staff members, and Col-
lier County Community Traffic Safety Team. The potential areas are subjected to a qualifying
process that includes actual field counts and observations, along with input from citizens in the
affected area. Working as a team, citizens and staff derive solutions that may be implemented to
address specific problems. Qualified traffic calming projects that are part of the county main-
tained road system become subject to a prioritization routine and a three -step installation proc-
ess . Funding for the county road NTMP projects must be sensitive to the prioritization criteria.
Qualified projects, approved for private road systems, are normally funded by HOA's, or Municipal
Service Benefit/Taxing Units (MSBlTU's). Homeowners requesting calming devices along dead -
end streets are required to fund those installations.
Traffic conditions on residential streets can greatly affect neighborhood livability. When our
streets are safe and pleasant, the quality of life is enhanced. When traffic problems become a
daily occurrence, our sense of community and personal well -being are threatened.
Studies of speeding complaints from homeowners living on residential streets in Collier County
illustrate that a majority of motorists drive over the 30 mph speed limit. Those who exceed the
speed limit come from all age groups: they are not just teenagers or commuters.
• Local residents drive faster on their local streets because they feel
familiar and comfortable.
• Outsiders use local streets as short cuts to busy arterial roads.
By addressing high vehicular speeds and cut through volumes; traffic calming can increase both
the real and perceived safety of pedestrians and bicyclists, and improve the quality of life within
the neighborhood.
Collier County Neighborhood Traffic Management Program NTMP 4
Agenda Item No. 10A
Using our NTMP traffic calming study and approval process will help determine when and where
traffic - calming measures are appropriate. Because traffic-calming measures have the potential to
create controversy, their installation occurs as the final step of a three -step process referred to as
the "three E's ", Education, Enforcement, and Engineering. This three -step process is outlined
on page 15 in the Project Flow Chart. Noteworthy to this process is the position of emergency
responders who are generally not in favor of most traffic calming devices.
Step # 1 - Education
Educational programs seek to remind speeding drivers of the negative effects of their actions, of-
ten by stressing that the community's children and elderly are the most at risk. Educational cam-
paigns may use brochures or neighborhood newsletters to spread this message. Newsletters
may also contain information on speeding fines (particularly in school zones), pedestrian and bi-
cycle safety tips, and information on average speeds in the neighborhood.
Step # 2 - Enforcement
Enforcement involves a more intensive police presence and a greater allocation of time to enforc-
ing the speed limit in a particular neighborhood. Unfortunately, it is often not practical to maintain
a police presence at the level needed to permanently lower speeds. Consistent visible enforce-
ment, however, does lead to respect of the speed limit by motorists.
Step # 3 - Engineering
Engineering includes, but is not limited to, traffic calming measures. It can also include the use of
signs and pavement markings to obtain the desired effect.
Because community involvement is critical to the traffic calming plan development process, NTMP
management of the process is required for local roads maintained by the County. Approval or in-
volvement of the NTMP for private roadways is not necessary but may be requested by the devel-
oper or Home Owners Association (HOA).
The selection of traffic calming measures should be based on the following:
• The measures potential to address volume or speed reduction on affected
roadways.
. The type of roadway.
• Actual site conditions.
Collier County Neighborhood Traffic Management Program NTMP 5
Agenda item No. 10A
February 22, 2005
Page 9 of 54
introduction Continued;
Specific measures have been grouped into four categories based upon the means by which they
reduce volumes and speeds:
Horizontal Deflection
• Vertical Deflection
• Physical Obstruction
Signs and Pavement Markings
Besides their primary function of reducing speeds or volumes, the large majority of measures also
have the ability to reduce conflicts between vehicles and pedestrians, bicyclists, and other vehi-
cles. In addition, well designed and landscaped traffic calming measures can enhance a
neighborhood's appearance and the quality of life for residents.
Collier County Neighborhood Traffic Management Program NTMP 6
Agenda Item No. 10A
February 22, 2005
Page 10 of 54
Goals, Objectives, and Policies
Goals:
It is the goal of the Collier County Neighborhood Traffic Management Program (NTMP) to estab-
lish procedures and techniques that will promote neighborhood livability by mitigating the negative
impacts of automobile traffic on residential neighborhoods. Although livability has no precise
definition, it can be thought of as encompassing the following characteristics:
The opportunity to walk or bike within the roadway area with a feeling of safety.
• The opportunity to interact socially with neighbors without traffic related distractions or
threats.
• A sense of community and neighborhood identity.
a A balanced relationship between the multiple uses and needs of a neighborhood.
Objectives:
1. To promote safe and pleasant conditions for residents, pedestrians, bicyclists, and
motorists on neighborhood streets.
2. To reduce vehicular speeding on local neighborhood streets.
3. To preserve and enhance pedestrian and bicycle access to neighborhood destinations.
4. To enhance a sense of community and neighborhood identity.
S. To encourage citizen involvement in neighborhood traffic management activities.
6. To provide a. process that will address neighborhood traffic management requests.
Policies:
1. Through traffic should be routed to the major roadways designated in the Traffic Circulation
Element of the Collier County Growth Management Plan.
Collier County Neighborhood Traffic Management Program NTMP 7
Agenda Item No. 10A
February 22, 2005
Page 11 of 54
Pol ivies Con inured;
2. Re- routed traffic that results from a traffic management project should be evaluated on a
project -by- project basis.
3. Emergency vehicle access should be preserved.
4. Major roadways are not eligible for NTMP.
5. Collier County shall employ a variety of traffic calming devices to achieve the NTMP's
objectives. Such traffic calming devices shall be planned and designed in conformance
with sound engineering and planning practices.
6. To implement the NTMP, certain procedures shall be followed in processing neighborhood
traffic management requests in accordance with applicable codes and related policies and
within the limits of available resources. At a minimum, the procedures shall provide for:
Submittal of project proposals.
• Evaluation of proposals by staff.
• Citizen participation in plan development and evaluation.
• Methods of temporarily testing traffic management plans when needed.
Communication of any test results and specific findings to area residents and af-
fected neighborhood organizations before installation of permanent traffic calming
devices.
• Review and prioritization of traffic calming projects requiring funding.
• Follow -up study and findings report.
Collier County Neighborhood Traffic Management Program NTMP 8
Agenda Item No. 10A
February 22, 2005
Page 12 of 54
A Traffic Calming Study begins with a request from an individual, or neighborhood group, repre-
sented through a petition (Petition Form NTMP2), signed by at least 10% of the households along
the affected roadway. Following receipt of the first petition, the NTMP Project Manager will order
a traffic study to be established on the affected roadway. Assuming the preliminary study data
indicates there is a need for traffic calming, the NTMP will require a completed application and
second petition to be submitted by the individual, or group who initiated the request. The com-
pleted application identifies the contact person or persons, addresses, phone numbers and dates
of application. The application asks for a description of the traffic condition. The best way to de-
termine community approval is through a neighborhood survey (second petition). The second pe-
tition constitutes a broad neighborhood survey and is required to have at least 51% of the house-
holds along the affected roadway requesting traffic calming. (See Application NTMP1 on page
47 and Petition Form NTMP2 on page 48).
Pre- application Procedures:
1. Resident or group calls /meets with County staff to discuss neighborhood traffic problem.
2. Resident or group acquires signatures on petition of at least 10% of the households along
affected roadway desiring to have a traffic study.
3. County staff reviews problem and site, collects preliminary traffic data to determine if
minimum eligibility criteria are met.
4. County staff meets with resident to review data findings.
5. If minimum criteria are met: County staff will determine boundaries of the petition area.
Application & Petition Circulation:
1. Resident circulates petition within identified petition area. Resident must obtain signatures
of more than 51% of households and/or businesses in the petition area.
2. Upon obtaining the necessary signatures, resident returns petition, completed application
and attendant materials to County staff.
3. County staff begins procedure to develop an NTMP project.
Collier County Neighborhood Traffic Management Program NTMP 9
A. Receipt of NTMP Application
County staff (NTMP Project Manager) receives the NTMP application.
B. Preliminary Analysis of Eligibility
County staff conducts preliminary analysis to evaluate whether the application meets Minimum
Requirements for Consideration:
MINIMUM REQUIREMENTS FOR CONSIDERATION
(PROJECT THRESHOLD: must meet one of the three)
CRITERION
MINOR COLLECTOR
LOCAL RESIDENTIAL
STREETS
STREETS
1. Minimum traffic volume
> 4,000 vpd or 400 vph
> 2,000 vpd or 200 vph
2. 85th percentile speed
10 mph > speed limit
5 mph > speed limit
3. Pedestrian /bike Level of
per Calculator Form
per Calculator Form
Service (LOS)
(LOS "C" or worse)
(LOS "C" or worse)`
C. Neighborhood Workshop
County staff will schedule a neighborhood workshop where a Traffic Team will be chosen,
the results of the preliminary analysis will be discussed, and the group will be enlightened on the
practice of Traffic Calming .
If Minimum Requirements for a traffic calming project are met, the neighborhood appoints 3 -5
representatives to work with County staff as members of the Traffic Team.
D. Development of NTMP Project Concept
The County staff and neighborhood representatives (the Traffic Team) begin with the three step
process (see page 15 - Project Flow Chart) to develop a suitable NTMP project concept using
various traffic calming techniques. The concept illustrates the desired techniques and improve-
ments but is not a construction document.
E. Presentation of NTMP Project Concept to Neighborhood
The Traffic Team schedules a second neighborhood workshop, notifies residents in the study
area, and presents the NTMP concept. The neighborhood residents attending the workshop must
reach a consensus of support for the project in order for it to move forward.
Collier County Neighborhood Traffic Management Program NTMP 10
Agenda Item No. 10A
February 22, 2005
Page 14 of 54
Procedure ' ontii' ui-ed.
F. Funding for Design and Construction of the NTMP Project Concept
Any NTMP project to receive funding through the NTMP grant process must be ranked according
to the Project Prioritization criteria. Rankings indicate which projects, or portions thereof, are to
receive funding for development of construction documents and construction implementation.
Those NTMP projects, which are to be fully funded by the neighborhood, are not part of the fund-
ing prioritization process, but are subject to all applicable planning and engineering review and
permitting.
PROJECT PRIORITIZATION
(Ranking of NTMP projects for funding)
I. Safety Factors: Maximum 40 Points
Criteria Points
1. Traffic Volumes:
Greater than 3,001 vehicles per day 10 points
2,501 to 3,000 vehicles per day 5 points
2,000 to 2,500 vehicles per day 2 points
2. Traffic Speeds:
85th% exceeds speed limit > 20 mph 10 points
85th% exceeds speed limit > 15 mph 5 points
85th% exceeds speed limit > 10 mph 1 points
3. Crash history:
> 6 accidents, past 5 years 5 points
3 to 5 accidents, past 5 years 3 points
1 to 2 accidents, past 5 years 1 point
4. Bike /Pedestrian LOS:
Level F 10 points
Level D 5 points
Level C 1 points
5. Other offsetting factors:
Provides for unusual /compelling situations not addressed
in other criteria. Must be recommended by TC staff for
consideration, with background specifics. 0 to 5 points
Safety Factor Total ........................
Collier County Neighborhood Traffic Management Program NTMP 11
Agenda stern No. 10A
February 22, 2005
Page 15 of 54
Procedures: Contir u d:
II. Improvement to Neighborhood Value: Max. 30 points
Criteria
Po_ ints
1. Percentage of residents expressing concern
3 points
> 70% of residents expressing concern
10 points
> 50% of residents expressing concern
5 points
> 30% of residents expressing concern
2 points
2. Neighborhood Aesthetics /Character:
5 points
NTMP devices with high -level of aesthetics
5 points
(contain both landscape /hardscape improvements)
1 point
NTMP devices with medium -level aesthetics
3 points
(contain either landscape /hardscape improvements)
NTMP devices with low -level aesthetics (non - punitive)
1 point
(signage)
NTMP devices with low -level aesthetics (punitive)
3 points
(speed humps)
3. Value Benefit Area (how many homes benefit from character improvement):
> 112 per mile
5 points
81 to 111 per mile
3 points
51 to 80 per mile
2 points
20 to 50 per mile
1 point
4. Neighborhood Cost Participation (property values > $250,000 /unit):
Neighborhood contribution 50% of cost
5 points
Neighborhood contribution 25% of cost
3 points
Neighborhood contribution 10% of cost
1 point
4a. Neighborhood Cost Participation (property values <$250,000 /unit):
Neighborhood contribution 50% of cost 10 points
Neighborhood contribution 25% of cost 5 points
Neighborhood contribution 10% of cost 2 points
5. Other offsetting factors:
Provides for unusual/compelling situations not addressed
in other criteria. Must be recommended by NTMP staff for
consideration, with background specifics. 0 to 5 points
Improvement to Neighborhood Value Total ..... ...............................
Collier County Neighborhood Traffic Management Program NTMP 12
Agenda Item No. 10A
February 22, 2005
Page 16 of 54
III. Neighborhood Demographic: Max. 30 points
Criteria Points
1. Number of children in neighborhood:
40 per mile 10 points
20 per mile 5 points
10 per mile 2 points
5 per mile 1 point
2. Number of houses facing the street (both sides):
> 56 per mile
5 points
41 to 55 per mile
3 points
26 to 40 per mile
2 points
10 to 25 per mile
1 point
3. Number of units on adjacent streets that must use the TC street for access:
> 56 per mile
5 points
41 to 55 per mile
3 Points
26 to 40 per mile
2 points
10 to 25 per mile
1 point
4. Schools and Public Facilities adjacent to the street:
Points for each school 5 points
Points for each recreation facility (park, pool, etc) 4 points
Points for each trail /walkway crossing 3 points
Points for each other public facilities 1 point
5. Neighborhood Services directly accessed by the street:
Points for grocery store 5 points
Points for neighborhood convenience store 3 points
Points for drug /general retail (Eckerd, etc) 2 points
Points for local retail (strip center, etc) 1 point
Neighborhood Demographic Total ......... ...............................
PRIORITIZATION TOTAL SCORE: I, II & III ..................
Collier County Neighborhood Traffic Management Program NTMP 13
Agenda Item No. 10A
February 22, 2005
Page 17 of 54
Procedures +continued:
G. Project Design and Implementation
County staff schedules the design and implementation of NTMP projects according to the scores of
the rankings.
H. Monitoring
Immediately following the installation of the project, County staff will begin evaluation of the project,
including field observations, traffic counts, speed studies, and other data collection as staff feels may
be appropriate, to review the effectiveness and impacts of the traffic calming project.
Collier County Neighborhood Traffic Management Program NTMP 14
~ Study Determines
Thresholds Are Not
Exceeded
Data Retained For Future
Com psrloans
Problem Decreases
Educational Programs
Continue
Problem Decreases
Enforcement Program e
Continue
Step E 1 And Step i 2
Continue To Serve
Neighborhood
Neighborhood Selocts I
Desired Calming
Technique Design
Funding Scenarios
Determined
Public Hearing With
Board Of County
Commissioners
Dlsspprovol Project Is
Rejected — Step f 1 and
Step i 2 Continue
County Performs Traffic
Study
Step 0 1 Educational
Programs Are Initiated
Stop N 2 Enforcement
Programs Are Initiated
Petition0 *term In*aThat I
Neighborhood Does Hot
W ant Traffic Calming
Devices
Step / 9 Engineering
Design Phase Is Initiated
Post Construction Construction of Calming
Evaluations Devices
Agenda Item No. 10A
February 22, 2005
Page 18 of 54
10% Of Households
Along Affected Roadway
Desire Traffic Calming
Study
Study Determ Inca
Thresholds Are Exceeded
Neighborhood Appoints
9.5 Residents To Work
With Transportation
Division As A Trafflc
Team
Problem Persists
Problem Persists
Neighborhood Traffic Team
Circulates Petition Among
Households To Determine If
51% Desire Some Typo Of
Calming Devloos
At Least 51 % Of
Households Desire
Calming Devices
Project Is Approved By
BCC
Bids Are Solicited For
Construction Of Calming
Devices
Contract Award
Collier County Neighborhood Traffic Management Program NTMP 15
Agenda Item No. 10A
February 22, 2005
Page 19 of 54
Techniques
Earlier we learned that traffic- calming measures have the potential to create controversy, so it is
recommended that their installation often occur as the final step of a three -step process referred
to as the "three E's" (education, enforcement, and engineering).
Step # 1 - Education
Educational programs seek to remind speeding drivers of the negative effects of their actions, of-
ten by stressing that the community's children and elderly are the most at risk. Educational cam-
paigns may use brochures or neighborhood newsletters to spread this message. Newsletters
may also contain information on speeding fines (particularly in school zones), pedestrian and bi-
cycle safety tips, and information on average speeds in the neighborhood.
Step # 2 - Enforcement
Enforcement involves a more intensive police presence and a greater allocation of time to enforc-
ing the speed limit in a particular neighborhood. Unfortunately, it is often not practical to maintain
a police presence at the level needed to permanently lower speeds. However, consistent visible
enforcement does lead to respect of the speed limit by motorists.
Step # 3 - Engineering
The Traffic Calming Task Force examined many different traffic calming engineered techniques.
Realizing that Collier County's /Naples' neighborhoods are not all the same and there are a variety
of street designs within neighborhoods, the Task Force included a wide range of techniques in
this program that will be needed to address differing traffic conditions.
Traffic Calming engineering techniques fall under two general categories— Physical and Psy-
chological. In general, wider roads encourage higher automobile speeds. It is therefore natural
that many traffic calming techniques are designed to physically change the width of the street.
Techniques such as neck downs, roundabouts and medians all decrease road width.
If a motorist can see into the distance, the tendency is to increase speed. The interruption of
sight lines, with changes in the road's direction will cause motorists to slow down. Using tech-
niques such as chicanes and roundabouts, or breaking the road into smaller visual units by
changing the surface pavement, such as brick pavers or stamped concrete, causes the driver
to slow down. It also means motorists widen their vision field, becoming much more aware of pe-
destrians and bicyclists. Changes in the road design force traffic to travel at a slower, more even
pace. Traffic calming may also be achieved by changing the psychological feel of the street.
Streets using different surface types, vertical landscaping or narrowed lanes create the appro-
priate space for a relaxed, pedestrian - friendly feel. These psychological changes give motorists
cues that they are no longer on a major roadway but are in a different environment that is shared
with people.
Collier County Neighborhood Traffic Management Program NTMP 16
Agenda Item No. 10A
February 22, 2005
continued.'
_ Page 20 of 54
Techn!q'.' ' 1 eS' ontinued.
All traffic calming techniques have a limited range of effectiveness. To achieve traffic calming ob-
jectives, some techniques need to be placed every 250 -400 feet. If traffic calming techniques are
used too sparsely, traffic may slow close to the installation, but the overall speed will probably not
decrease. One technique may be used multiple times or multiple techniques may be used in con-
junction with one another. Most techniques will affect noise, air quality, congestion, fuel con-
sumption and many other factors. Some can improve these conditions, others may cause these
problems to increase.
Emergency vehicle access and response time must be considered when designing and installing
traffic calming devices. Emergency vehicles, particularly ambulances, have more difficulty with
"vertical" devices such as speed humps than with "horizontal" devices such as neckdowns.
Likewise, bicyclists and pedestrians must be kept in mind when developing a traffic calming strat-
egy, as some devices can obstruct their movements. Many devices can be modified to allow bi-
cyclists and pedestrians to by -pass them. For instance, a divertercan be fitted with a bicycle/
pedestrian link to allow for through movement.
- The following is a compendium of calming techniques -
te mation',
p#1 E41
Traffic Calming Education produces activities that inform and seek to modify driver behav-
ior. Techniques include printed information, meetings and workshops with staff, interac-
tion with neighbors, signing campaigns, enforcement activities, neighborhood speed
watches, school programs, parent outreach, etc.
The following ideas and concepts are credited to David Engwicht, Co Founder of Creative
Communities International, Australia.
Traffic Calming Education strives to increase understanding of the dynamitic nature of traffic
calming, as well as providing insight into the options of taming traffic with out physical devices.
The first step towards better understanding of how to calm traffic is to understand how we lost our
streets to traffic in the first place. For thousands of years, streets have not just been a place for
movement, but also the stage for spontaneous neighborhood- building activity and the market
place for commerce.
As we have endeavored to provide better streets and transportation facilities we have designed
spaces for motorists that are predictable. Having driving spaces that are predictable allows the
typical motorists to develop a false sense of security producing a tendency to speed up. As mo-
torists push the safety boundaries and drive faster, residents become intimidated by the traffic
and retreat to the safety of their homes and other spaces.
Collier County Neighborhood Traffic Management Program NTMP 17
Agenda Item No. 10A
February 22, 2005
Page 21 of 54
Education continued:
This psychological retreat from the street has not only eroded the quality of neighborhood life and
sense of community, but it has also encouraged traffic to go even faster by diminishing the in-
trigue and uncertainty factors. There was a time when children played in our streets and adults
met there to chat. The presence of children and adults in the roadway created a high degree of
intrigue and uncertainly so motorists traveled very slowly. Today we find that the design of our
streets and buildings has further reduced the intrigue and uncertainty factors, which has encour-
aged even higher traffic speeds.
The feelings of intimidation, causing us to retreat from our streets, diminished the community -
building processes associated with human activities near or in the streets. Winning our streets
back starts by changing our attitudes, refusing to be intimidated and by highly valuing our streets
for spontaneous social and cultural activity. Moving human activities back towards the street will
begin to reverse the erosion process. Please understand that this does not mean that you start
by telling the kids to go play in the traffic. If the last act of surrender was not parking your cars in
the street, then this is where you start. This visually narrows the road, which slows the traffic and
allows other reclaiming activities to be added in safety.
As a neighborhood you can create street activity by organizing inter - street street games competi-
tions such as street hockey, hopscotch, etc. You may wish to organize a block party, but one
where the street is not closed to traffic. (This is very important as we are trying to establish a new
culture of respect for the dual role of streets for movement and social activity.) You can also in-
crease street activity by walking your kids to school, or by walking to local destinations yourself.
Encourage the establishment of "activity nodes"— places where people are encouraged to linger.
Increasing intrigue and uncertainty will reduce speeds, but doesn't this encourage rubbernecking,
which we all know causes more accidents? There is a paradox when it comes to safety: you can
make an environment safer by making it more predictable or making it less predictable.
The amount of predictability or unpredictability does not make an environment safe or unsafe.
Any environment becomes unsafe if the actual risks are higher than the perceived risks — that is,
when drivers are lulled into a false sense of security about the degree of danger present. We can
reduce the instance of a false sense of security by having the design of an environment signal to
the driver that they are likely to encounter high levels of unpredictability. If the normative state of
a street is that the unexpected should be expected, then traffic control devices such as line mark-
ings, official signage, concrete islands and even first- generation traffic calming devices create a
mixed message. They promise certain levels of predictability. When we create traffic environ-
ments that encourage speed and domination by cars, community life will retreat from the space.
(We increased predictability). However, when we create a traffic environment with high levels of
ambiguity the traffic speeds will drop and community life will blossom in the space. (We in-
creased unpredictability).
SLOW-V"n
FOR
OUR
KIDS
Collier County Neighborhood Traffic Management Program NTMP 18
Agenda Item No. 10A
February 22, 2005
Page 22 of 54
Ea u cat c n ,,on e :
Design signals that the Design signals that the
space is predictable I I space is unpredictable
Intrigue and uncertainty Traffic intrigue and uncertainty Traffic
decline, predictability increase, unpredictability slows
increases
speeds up increases down
Community I Community life
life retreats increases
The amount of intrigue and uncertainty signaled by the design of a traffic environment must be
determined by the vision of the vibrancy of community and economic life desired for a space. Vi-
brant neighborhoods plus safe streets equals high levels of ambiguity in the street design. The
same design principles used to create a great indoor room are used to create a great street.
Unlike traditional traffic calming, they do not necessarily have to change the physical geometry of
the street. They rely primarily on changing the psychological feel. They send clear messages
about the dual functions of the street, and contain much higher levels of intrigue and uncertainty.
The educational aspects of traffic calming include activities that inform and seek to modify driver
behavior. Behavioral modification programs may focus on such topics as the following:
• Encourage residents to psychologically reclaim their street and relate to it in a new way.
• Involve residents in the redesign of their streetscapes.
• Encourage residents to reduce their propensity to take risk when driving.
• Encourage residents to reduce their car use and the speed at which they drive.
One such program that works extremely well to modify behavior is the Neighborhood Pace Car.
Residents experiencing traffic problems in their neighborhood are encouraged to sign the Pace
Car Pledge. (See page 46). They promise to drive within the speed limit, stop to let pedestrians
cross and minimize their car use. They put a Pace Car sticker on the back of their cars so motor-
ists behind know why they are driving courteously. When there are sufficient Pace Cars on the
streets, traffic is calmed countywide. Pace Cars are "mobile speed bumps" that get out of the
way of emergency vehicles.
7PCECRMEa/�,
1e• `
Collier County Neighborhood Traffic Management Program NTMP 19
Agenda Item No. 10A
February 22, 2005
Page 23 of 54
Ed ucati n Continued:
The Pace Car is a very important part of an overall strategy to make streets safer and to increase
the vitality of neighborhood life. It calms drivers rather than streets and thus reduces the propen-
sity for drivers to take risk. The Pace Car sticker is an essential element as it informs the drivers
behind why the car is being driven within the law. This reduces the chances of them becoming
agitated and is part of an awareness raising process. The Pace Car helps create an environment
where adults and children are more likely to walk or use their street for play and socializing.
The Pace Car also makes the motorist much more aware of their immediate surroundings. If you
break the motorist's fixation on getting to their destination as quickly as possible, they become
much more connected to the environment they are passing through. This obviously makes them
a safer driver, but it also makes them a part of the street life, rather than an interloper destroying
the street life.
NE1GH6,_,.RHO
NTMP
PACE
CAR
Advantages:
Can be relatively effective
• Involves and empowers citizens; and
• Works well with other mitigation tools.
Disadvantages:
• Not likely to be as effective on non - neighborhood traffic;
• May be difficult to measure effectiveness;
• Can be expensive and or time consuming;
• May take time to be effective; and
• Effectiveness may decrease over time.
1' BRAKE Fq�RJ)A
PEDESTIRLANS11 L
y. f L s, if 5 yy ..
� r, r � �} � �
W;
}
�> Ile,
Collier County Neighborhood Traffic Management Program NTMP 20
Agenda Item No. 10A
February 22, 2005
Page 24 of 54
ducatipr C t'tn� red:
Sian informing public that traffic calming devices
have been installed.
Advantages:
• informs and alerts driver of oncoming devices;
• improves safety of the technique or device being used; and
• Improves effectiveness of the technique or device.
Disadvantages:
More signage on the street, sometimes considered unsightly.
Step n #►r�cefe�n#
Mobile radar display advises
motorists of the speed at which
they are trav, el_,�
Advantages:
• Educational tool;
• Very good public relations tool; and
• Useful especially in school and construction zones
where spot speed reduction is important.
Disadvantages:
• Requires periodic enforcement;
• Effective for limited duration; and
• Unit moves frequently, which requires personnel.
Collier County Neighborhood Traffic Management Program NTMP 21
Enforcement Continued;
Periodic monitoring by police of
speeding and other violations.
Advantages:
• Good temporary public relations tool; and
• Serves to inform public that speeding is
undesirable behavior, for which there are
consequences.
Disadvantages:
• Effect is not permanent; and
• Enforcement is an expensive tool.
Agenda item No. 10A
February 22, 2005
Page 25 of 54
Collier County Neighborhood Traffic Management Program NTMP 22
left
t nilein-
Speed Control Measures
- Vertical Deflection -
Raised Crosswalks
a.k.a. Raised crossings, sidewalk extensions.
Raised crosswalks are Speed Tables outfitted with
crosswalk markings and signage to channelize pe-
destrian crossings, providing pedestrians with a
level street crossing. Also, by raising the level of
the crossing, pedestrians are more visible to ap-
proaching motorists.
Advantages:
Raised Crosswalks improve safety for both pedestrians
and vehicles;
• If designed well, they can have positive aesthetic value;
• They are effective in reducing speeds; and
• They are good for locations where pedestrian crossings
occur at haphazard locations and vehicle speeds are ex-
cessive.
Disadvantages:
• Textured materials, if used, can be expensive;
• Impacts on drainage needs to be considered; and
• Noise and air pollution may increase.
Agenda Item No. 1OA
February 22, 2005
Page 26 of 54
Collier County Neighborhood Traffic Management Program NTMP 23
Agenda Item No. 10A
February 22, 2005
Page 27 of 54
Engineering Continued:
Speed control Measures
- Vertical Deflection -
Speed Humps
a.k.a. Road humps, undulations.
Speed humps are rounded raised areas placed
across the roadway. They are generally 10 to 14
�.
feet long (in the direction of travel), making them
distinct from the shorter "speed bumps" found;
in many parking lots, and are 3 to 4 inches high.
The profile of a speed hump can be circular,n
`~
parabolic, or sinusoidal. They are often tapered$}
as they reach the curb on each end to allow un-
impeded drainage.
Advantages:
• Speed Humps are relatively inexpensive;
• They are relatively easy for bicycles to cross if designed appropriately;
• They are very effective in slowing travel speeds; and
• They are good for locations where very low speeds are desired and reasonable, and noise and fumes are
not a major concern.
Disadvantages:
• They cause a "rough ride" for all drivers, and can cause severe pain for people with certain skeletal dis-
abilities:
• They force large vehicles, such as emergency vehicles and those with rigid suspensions, to travel at
slower speeds;
• They may increase noise and air pollution; and
• They have questionable aesthetics.
Collier County Neighborhood Traffic Management Program NTMP 24
En nud:
Speed Control Measures
- Vertical Deflection -
Speed Tables
a.k.a. Trapezoidal humps, speed platforms.
Speed tables are flat- topped speed humps, also 3 to 4 inches
high but with a sloped approach taper on each side of a flat
top. They are generally 20 to 24 feet wide. Comfortable speed
limited to 20 to 25 mph.
Advantages:
• Speed Tables are relatively inexpensive;
Agenda Item No. 10A
February 22, 2005
Page 28 of 54
• They are relatively easy for bicycles to cross if designed appropriately;
• They are very effective in slowing travel speeds; and
• They are good for locations where very low speeds are desired and reasonable, and noise and fumes are
not a major concern.
Disadvantages:
• They cause a "rough ride" for all drivers, and can cause severe pain for people with certain skeletal dis-
abilities.
• They force large vehicles, such as emergency vehicles and those with rigid suspensions, to travel at
slower speeds;
• They may increase noise and air pollution; and
• They have questionable aesthetics.
Collier County Neighborhood Traffic Management Program NTMP 25
Engineering Continued;
Speed Control Measures
- Vertical Deflection -
Raised Intersections
a.k.a. Raised junctions, intersection humps, plateaus.
Raised intersections are fiat raised areas covering an entire
intersection, with ramps on all approaches and often with
brick or other textured materials on the flat section. They usu-
ally raise to the level of the sidewalk, or slightly below to pro-
vide "lip" that is detectable by the visually impaired. By modi-
fying the level of the intersection, the crosswalks are more
readily perceived by motorists to be "pedestrian territory".
Advantages:
Agenda Item No. 10A
February 22, 2005
Page 29 of 54
4
• Raised Intersections improve safety for both pedestrians and vehicles;
• If designed well, they can have positive aesthetic value;
• They can calm two streets at once;
• They are good for intersections with substantial pedestrian activity; and
• They are good for areas where other traffic calming measures would be unacceptable because
they take away scarce parking spaces.
Disadvantages:
• They tend to be expensive, varying by materials used;
• Their impact to drainage needs to be considered; and
• They are less effective in reducing speeds than Speed Humps, Speed Tables, or Raised Crosswalks.
Collier County Neighborhood Traffic Management Program NTMP 26
E e+ertnc] t�r� r�� d:
n
Speed Control Measures
- Vertical Deflection -
Textured Pavement
a.k.a. Change in pavement texture (such as asphalt to brick).
Textured pavements are roadway surfaces paved with brick,
concrete pavers, stamped asphalt, or other surface materials
that produce constant small changes in vertical alignment.
Though including textured pavements among vertical features
may appear a stretch to some readers, one need only observe
travel speeds on old cobblestone and brick streets to appreci-
ate the rationale.
Advantages:
" . If designed well, they can have positive aesthetic value;
• They can calm two streets at once; and
Agenda Item No. 10A
February 22, 2005
Page 30 of 54
They are good for intersections with substantial pedestrian activity.
Disadvantages:
They tend to be expensive, varying by materials used;
Impact to drainage needs to be considered; and
• Require increased maintenance
Collier County Neighborhood Traffic Management Program NTMP 27
Engineering Continued:
Speed Control Measures
- Horizontal Deflection -
Chicane
a.k.a. Deviations, serpentines, reversing curves,
twists, and staggerings.
Chicane is a series of narrowings or curb extensions that al-
ternate from one side of the street to the other forming S-
shaped curves. Unless well- designed, a chicane may still
permit speeding by drivers cutting straight paths across the
center line. Shifts in alignment should be at least one lane
width, deflection angles of at least 45 degrees, and center is-
lands to prevent drivers from taking a straight "racing line"
through the feature.
Advantages:
Agenda Item No. 10A
February 22, 2005
Page 31 of 54
• A very effective method of changing the initial impression of the street. If done correctly, drivers will not
be able to see through. Appears as a road closure yet allows through movement;
• Aesthetically pleasing;
• Reduces speed without significantly impacting emergency response;
• Imposes minimal inconveniences to local traffic;
• Pedestrians have a reduced crossing distance;
• Provides a greater visual obstruction; and
• Accepted by public as speed control device.
Disadvantages:
• They tend to be expensive, varying by materials used;
• Appropriate for midblock locations only;
• Most effective with equivalent volumes on both approaches; and
• They require increased maintenance
Collier County Neighborhood Traffic Management Program NTMP 28
E n n �e ring o nt.i U+ d*
Speed Control Measures
- Horizontal Deflection -
Centerline and Ed
a.k.a. Visually narrowing the roadway (E
kline Stripin
Painting an edgeline several feet from the pavement edge has
the effect of visually narrowing the roadway. A double yellow
line striped down the center of roadway might have a compara-
ble effect, visually limiting drivers to half of the road. In theory,
the perceived narrowing could cause a modest speed reduction,
just as a real narrowing causes a modest speed reduction.
Advantages:
Fast, cost effective solution; and
They are especially appropriate for rural roads with no
shoulders.
Disadvantages:
• They are not proven to be successful; and
• May be most effective immediately after initial installation;
Agenda Item No. 10A
February 22, 2005
Page 32 of 54
Collier County Neighborhood Traffic Management Program NTMP 29
Agenda Item No. 10A
February 22, 2005
Page 33 of 54
Engineering continued.
Speed control Measures
- Horizontal Deflection -
Roundabouts
a.k.a. Rotaries.
Roundabouts are raised circular areas (similar to medians) placed at intersections. Drivers travel in a
counter- clockwise direction around the circle. Modem roundabouts are "yield upon entry", meaning that
cars in the circle have the right of way and cars entering the
circle must wart to do so until the path is clear. When a
roundabout is placed in an intersection, vehicles may not
travel in a straight line.
Advantages:
• Reduces crashes by 50 to 90 percent when compared to
2 -way, 4-way stop signs and traffic signals by reducing
the number of conflict points at intersections;
• Reduces speed at intersection approach;
• Cheaper to maintain than a traffic signal;
• Effective at multi -leg intersections;
• Provides equal access to intersections for all drivers;
• Provides a good environment for cyclists; and
Does not restrict movements, but makes them more difficult.
Disadvantages:
• May be restrictive for larger vehicles if designed to a low speed;
• May require additional lighting and signage;
• If left turns by large vehicles are to be accommodated, then right of way may have to be purchased;
• Initial safety issue as drivers adjust;
• May increase volumes on adjacent streets; and
• Maintenance responsibility if landscaped.
Collier County Neighborhood Traffic Management Program NTMP 30
En r ring Cot inued.
Speed Control Measures
- Horizontal Narrowing -
Lane Narrowin
a.k.a. Squeeze.
Street is physically narrowed to expand sidewalks and land-
scape areas; possibly adding medians, on- street parking,
etc.
Advantages:
• Minor inconveniences to drivers;
• Minimal inconveniences to local traffic;
• Good for pedestrians, due to shorter crossing distance;
• Provides space for landscaping;
• Slows traffic without seriously affecting emergency response time;
Agenda Item No. 10A
February 22, 2005
Page 34 of 54
• Effective when used in a series; and
• Single lane narrowing reduces vehicle speed and through traffic.
Disadvantages:
• Double lane narrowing not very effective at reducing speeds or diverting through traffic;
• Only partially effective as a visual obstruction;
• unfriendly to cyclists unless designed to accommodate them; and
• Conflict between opposing drivers arriving simultaneously could create problems.
Collier County Neighborhood Traffic Management Program NTMP 31
Engineering 'ontinued:
Speed Control Measures
- Horizontal Narrowing -
Mid -Block Median
a.k.a. Dividing and narrowing space.
Center of street has an island or barrier that serves
to segregate traffic.
Advantages:
• Provides a refuge for pedestrians and cyclists;
• May improve streetscape if landscaped;
• Provides barrier between lanes of traffic; and
• May produce a limited reduction in vehicle speeds.
Disadvantages:
• May reduce site lines if over landscaped; and
• Increased maintenance.
Agenda Item No, 10A
February 22; 2005
Page 35 of 54
Collier County Neighborhood Traffic Management Program NTMP 32
Er�gnrir rird
Speed Control Measures
- Horizontal Narrowing -
Neckdowns
a.k.a. Nubs, bulbouts, knuckles, intersection narrowings,
comer bulges, safe crosses.
Neckdowns are curb extensions at intersections that reduce
the roadway width from curb to curb. They "pedestrianize"
intersections by shortening crossing distances for pedestri-
ans and drawing attention to pedestrians via raised penin-
sulas. They also tighten the curb radii at the corners, re-
ducing the speeds of turning vehicles.
Advantages:
May be aesthetically pleasing, If landscaped;
Good for pedestrian, due to shorter crossing distance;
Agenda Item No. 10A
February 22, 2005
Page 36 of 54
• Can be used in multiple applications or on a single segment of roadway;
Through and left -tum movements are easily negotiable by large vehicles; and
• Slows traffic without seriously affecting emergency response time.
Disadvantages:
• Landscaping may cause sight line problems;
• Unfriendly to cyclists unless designed to accommodate them; and
• May require the elimination of some on- street parking near intersections.
Collier County Neighborhood Traffic Management Program NTMP 33
Engineering Continued:
Speed Control Measures
- Other Devices -
Angled Slow Point
a.k.a. Variant of a chicane or one -lane choker.
Angled deviations to deter the path of travel so that the street
is not a straight line (by the installation of offset curb exten-
sions).
Advantages:
• Reduces vehicle speed;
• More effective when used in a series;
• Imposes minimal inconveniences to local traffic;
• Pedestrians have a reduced crossing distance;
• Provides space for landscaping; and
• Provides a visual obstruction.
Disadvantages:
• Landscaping needs to be controlled to ensure visibility is
reduced;
• Contrary to driver expectation of unobstructed flow;
• Can be hazardous for drivers and cyclists If not designed
and maintained properly;
Agenda Item No. 10A
February 22; 2005
Page 37 of 54
• Confrontation between opposing drivers arriving simultaneously may create problems;
• Double lane application is less effective in controlling speeds than single lane because drivers can create
a straighter through movement by driving over centerline; and
• Increases area of landscaping to be maintained by residents.
Collier County Neighborhood Traffic Management Program NTMP 34
Eric gip. Q�Gntinu d.
Speed control Measures
- other Devices -
Rumble Strip
a.k.a. Jiggle bumps.
Pattern sections of rough pavement which call attention to
vehicle speeds.
Advantages:
• May reduces vehicle speed;
• More effective when used in a series;
• Imposes minimal inconveniences to local traffic;
• Creates driver awareness; and
• Relatively inexpensive to install.
Agenda Item No. 10A
February 22, 2005
Page 38 of 54
Disadvantages:
• High maintenance;
• May adversely impact bicyclists;
• May be ineffective in reducing vehicle speeds; and
• Rumble strips are noisy by design, and are not recommended for
neighborhood settings.
Collier County Neighborhood Traffic Management Program NTMP 35
Engineering continued:'
Volume Control Measures
- Full Closure -
Full Closure
a.k.a. Cul-de -sacs, dead ends.
Full street closures are barriers placed across a street to com-
pletely close the street to through - traffic, usually leaving only
sidewalks open.
Advantages:
• Reduces traffic volumes;
• Eliminates through traffic;
• Reduces speed of the remaining vehicles;
• Improves safety for all the street users; and
• Pedestrian and bike access maintained.
Disadvantages:
• Requires legal procedures for closure;
• Reduces emergency vehicle access;
• Reduces access to properties for residents;
• May be perceived as an inconvenience by some neighbors
and an unwarranted restriction by the general public; and
• May increase traffic volumes on other streets.
Agenda Item No. 10A
February 22, 2005
Page 39 of 54
Collier County Neighborhood Traffic Management Program NTMP 36
En' gfnernng' nveq,.
Volume Control Measures
- Partial Closure -
Partial Closure
a.k.a. Half street closure, one -way closure.
Partial or half street closures are barriers that block travel in
one direction for a short distance on otherwise two -way
streets.
Advantages:
• Reduces traffic volumes;
~- • Eliminates through traffic in one direction;
• Allows two -way traffic in the remainder of the street;
• Provides space for landscaping;
• Improves safety for all the street users; and
• . Maintains pedestrian and bike access.
Disadvantages:
• Reduces emergency vehicle access as they have to drive
around partial closure with care;
• Compliance with semi- diverters is not 100 %;
Reduces access to properties for residents;
• May Increase trip length for some residents;
• May be perceived as an Inconvenience by some neighbors
and an unwarranted restriction by the general public; and
• May increase traffic volumes on other streets.
Agenda Item No. 10A
February 22, 2005
Page 40 of 54
Collier County Neighborhood Traffic Management Program NTMP 37
Engineering Continued:
Volume Control Measures
- Traversable Barriers -
Traversable Barriers
a.k.a. Closed to motor vehicles but traversable
by emergency vehicles.
A barrier placed across any portion of a street that is travers-
able by bikes, pedestrians, in -line skaters, and emergency ve-
hicles, but not by motor vehicles.
Advantages:
• Reduces traffic volumes;
• Eliminates cut through traffic;
• Allows two -way traffic in the remainder of the street;
• Provides space for landscaping;
• Improves safety for all the street users; and
• Maintains pedestrian and bike access.
Disadvantages:
• Reduces emergency vehicle access as they have to drive
around barrier with care;
• Compliance with semi- diverters is not 100 %;
• Reduces access to properties for residents;
• May increase trip length for some residents;
• May be perceived as an inconvenience by some neighbors
and an unwarranted restriction by the general public; and
• May increase traffic volumes on other streets.
Agenda Item Flo. 10A
February 22, 2005
Page 41 of 54
Collier County Neighborhood Traffic Management Program NTMP 38
Engineering 6 tinued',
Volume Control Measures
- Diagonal Road Closure -
Diagonal Road Closure
a.k.a. Closed to motor vehicles but traversable
by pedestrians and bicyclists.
A barrier placed Diagonally across a four legged Intersection,
Interrupting traffic flow across the Intersection.
Advantages:
• Eliminates through traffic;
• Allows two-way traffic in the remainder of the street;
• Provides space for landscaping;
• Improves safety for all the street users; and
• Maintains pedestrian and bike access.
Disadvantages:
• Reduces emergency vehicle access;
• Reduces access to properties for residents;
• May increase trip length for some residents;
• May be perceived as inconvenience by some neighbors
and an unwarranted restriction by the general public; and
• May increase traffic volumes on other streets.
Agenda Item No. 10A
February 22, 2005
Page 42 of 54
Collier County Neighborhood Traffic Management Program NTMP 39
Engineering Continued.
Volume Control Measures
- Cul -De -Sac -
C u I -De -Sac
a.k.a. Dead end street.
Street closed to motor vehicles using planters, bollards or bar-
riers.
Advantages:
• Eliminates through traffic;
• Reduces speed of the remaining vehicles;
• Provides space for landscaping;
• Improves safety for all the street users; and
• Maintains pedestrian and bike access.
Disadvantages:
• Reduces emergency vehicle access;
• Reduces access to properties for residents;
• May increase trip length for some residents;
• May be perceived as an inconvenience by some neighbors
and an unwarranted restriction by the general public; and
• May increase traffic volumes on other streets.
Agenda Item No. 10A
February 22, 2005
Page 43 of 54
Collier County Neighborhood Traffic Management Program NTMP 40
Agenda Item No. 10A
February 22, 2005
Page 44 of 54
Engin Grin .iontinu+e :
Volume control Measures
- Forced Turn Barriers /Diverters -
Forced Turn Barriers/
Diverters
a.k.a. Forced turn channel izations, pork chops, right turn
.islands.
Street closed to motor vehicles using planters, bollards
or barriers.
Advantages:
• Changes driving patterns;
• May reduce cut through traffic;
• Provides space for landscaping;
• Improves safety for all the street users; and
• Maintains pedestrian and bike access.
Disadvantages:
• May increase response times for emergency vehicles;
• Reduces access to properties for residents;
• May increase trip length for some residents;
• Can be aesthetically unattractive if not landscaped; and
• Maintenance responsibility if landscaped.
Collier County Neighborhood Traffic Management Program NTMP 41
Engineering Continued:
Volume Control Measures
- Modified Intersection -
Modified Intersection
a.k.a. Forced turn channelizations.
Median devices that force turns by motorist.
Advantages:
• Reduces vehicle speed;
• Changes driving patterns;
• Necessary to enforce changes in priority from one street to
another,
• Reduces through traffic; and
• May provide space for landscaping.
Disadvantages:
• May increase response times for emergency vehicles;
• Reduces access to properties for residents;
• May increase trip length for some residents;
• Can be aesthetically unattractive if not landscaped; and
• Maintenance responsibility if landscaped.
Agenda Item No. 10A
February 22, 2005
Page 45 of 54
Collier County Neighborhood Traffic Management Program NTMP 42
En theeri� ., tinued:
Volume Control Measures
- one -Way Streets -
One -Way Streets
a.k.a. Single direction traffic flow.
Streets that allow traffic flow in one direction only.
Changing the traffic flow pattern with one -way streets
should be considered only in areas where there Is a
documented high percent of cut through traffic and
where aitemative routes exist.
Advantages:
• Tends to be safer, due to lack of friction from op-
posing traffic flow;
• Can facilitate traffic flow through an area;
• Can open up narrow streets for more resident park-
ing;
• Maintains reasonable access for emergency vehicles; and
• Maze effect of one-way traffic can discourage through traffic.
Agenda Item No. 10A
February 22, 2006
Page 46 of 64
Disadvantages:
• May increase response times for emergency vehicles;
• Reduces access to properties for residents;
• May increase trip length for some residents;
• Can lead to increased vehicle speeds; and
• May result in initial safety concerns as drivers adjust.
Collier County Neighborhood Traffic Management Program NTMP 43
Agenda Item No, 10A
February 22, 2005
Page 47 of 54
Engineering ontinued:
Combined Measures
- Gateway Treatment -
Gateway Treatment
a.k.a. Entrance feature signaling change in use.
Treatment to a street that includes a sign, banner, landscaping or other structure that helps to communicate
a sense of neighborhood.
Advantages:
• Positive indication of a change in environ-
ment from arterial road to residential street;
• Reduces entry speed;
• Reduces pedestrian crossing distances;
• On very wide streets provides space for land-
scaping the median;
• Helps give neighborhood a sense of identity;
and
• Allows neighborhood creativity and participation in design.
Disadvantages:
May increase maintenance responsibility.
Collier County Neighborhood Traffic Management Program NTMP 44
Agenda Item No. 10A
February 22, 2005
Page 48 of 54
Erna ne ri . C- nfinuedd;
Combined Measures
- Landscaping -
Landscaping
a.k.a. Decorative alteration and planting of grounds.
Treatment to a streetscape that focuses on landscaping to communicate a sense of neighborhood and helps
make motorists aware of a change In driving environment.
Advantages:
Positive indication of a change in environ-
ment from arterial road to residential street;
• Reduces entry speed;
• May reduce pedestrian crossing distances;
• Helps give neighborhood a sense of identity;
and
• Allows neighborhood creativity and partici-
pation in design.
Disadvantages:
• May increase maintenance responsibility.
Collier County Neighborhood Traffic Management Program NTMP 45
Agenda Item No. 10A
February 22, 2005
Page 49 of 54
Engineering Continued:
Combined Measures
- Modified Street Design -
Modified Street Design
a.k.a. Change in streetscape.
Treatment to a streetscape that focuses on visual aspects, landscaping and dimensional changes to commu-
nicate a sense of neighborhood and helps make motorist aware of a change in driving environment.
Advantages:
• Positive indication of a change in environ-
ment from arterial road to residential street;
• Reduces entry speed;
• May reduces pedestrian crossing distances;
• Helps give neighborhood a sense of identity;
and
• Allows neighborhood's creativity and partici-
pation in design.
Disadvantages:
• May increase maintenance responsibility.
Collier County Neighborhood Traffic Management Program NTMP 46
It"N
D TRAFFIC
PROGRAM
Agenda Item No. 10A
February 22, 2005
Page 50 of 54
ra TMP
PACE
Ali p
Pace Car Registration Form
Neighborhood Pace Car Pledge:
Realizing that my driving affects the livability of other people's
neighborhoods, just as other people's driving affects my neighborhood,
I hereby pledge to:
Drive within the speed limit on city streets.
• Stop to let pedestrians cross and be courteous to bicyclists and others.
• Display my Pace Car Sticker and put something on or in my car that's
designed to make others laugh.
• Be a courteous and aware pedestrian when I am walking.
• Be a courteous and aware cyclist when I am biking.
• Have fun while caring for others.
Signed
Date:
First Name:
Street Address:
Phone*
* Optional
Last Name:
Zip Code:
Email*
Collier County Neighborhood Traffic Management Program NTMP 47
NTMP
NEIGHBORHOOD TRAFFIC
fANAGEMENT PROGRAM
Agenda Item No. 10A
February 22, 2005
Page 51 of 54
PROJECT APPLICATION
Date: Neighborhood:
Names of three to five Neighborhood representatives:
Name of Contact Person:
Local Address:
Contact phone numbers:
Which neighborhood street(s) are of concern?
FORM
Form NTMP1 (01120/05)
What traffic problems have you identified affecting the above street(s)?
Number of households and/or businesses identified in your petition area:
Number of signatures received from households in your petition area:
Please return the completed application form along with the signed petition forms to:
NTMP Project Manager
Collier County Transportation Services Division
Neighborhood Traffic Management Program
2883 South Horseshoe Drive
Naples, Florida 34104
Phone: 239 - 213 -5834
Collier County Neighborhood Traffic Management Program NTMP 48
NTM--P
NEIGHBORHOOD TRAFFIC
MANAGEMENT PROGRAM
COLLIER COUNTY FLORIDA
Agenda Item No. 10A
February 22, 2005
Page 52 of 54
PAGE OF
PETITION FORM
Form NTMP2 01120/05
We, the undersigned, as residents of the neighborhood,
hereby request the evaluation of the traffic problems on
street(s), the problems being identified as
And the development of a Neighborhood Traffic Management Project.
Please list all addresses in the petition area. One signature per address.
DATE NAME (please print) ADDRESS SIGNATURE
Collier County Neighborhood Traffic Management Program NTMP 49
Agenda Item No. 10A
February 22, 2005
Page 53 of 54
Appendix:
Roadways in Collier County Not Considered Local Facilities
Airport- Pulling Road
Bald Eagle Drive
Bayshore Drive
Bonita Beach Road
Carson Road
County Barn Road
CR 29 (US 41 to end of Chokoskee Is-
land Causeway)
Davis Boulevard
Golden Gate Parkway
Goodlette -Frank Road
Green Boulevard
Gulf Shore Drive
CR 951
immokalee Road
Interstate 75
Lake Trafford Road
Logan Boulevard
Livingston Road
N. 1 st Street (immokalee)
New Market Road
N. 11th Street (Immokalee)
Camp Keais Road
Old 41 (CR 887)
Pine Ridge Road
Radio Road
Rattlesnake- Hammock Road
Santa Barbara Boulevard
San Marco Road
SR 29
SR 951
Tamiami Trail (US 41)
Vanderbilt Beach Road (CR 951 to
Hammock Oak Drive)
Vanderbilt Drive (111th Ave. N. to Bo-
nita Beach Rd.)
Westclox Road
Wiggins Pass Road
Roadways in the City of Naples
Not Considered Local Facilities
• Central Avenue (from Goodlette -Frank
Rd. to 8th Street)
• Fleischman Boulevard
• Golden Gate Parkway
• Goodlette -Frank Road
• Tamiami Trail
• 8th Street (from 4th Ave. N. to 8th
Ave. S.)
• 10th Street (from 5th Ave. N. to 5th
Ave. S.)
Coilier County Neighborhood Traffic Management Program NTMP 50
Agenda Item No. 10A
February 22, 2005
Page 54 of 54
A�ck a dements
The Collier County /Naples Metropolitan Planning Organization (MPO) and the
Traffic Calming Task Force created the Collier County /Naples Neighborhood
Traffic Management Program (NTMP). The MPO staff and the Task Force then
formed the NTMP, incorporating a Traffic Calming Committee and a process for
identifying, qualifying and addressing problems.
This 2004 addition of the NTMP book is an updated version of the original booklet
created by the Traffic Calming Task force in 1995. The NTMP would like to grate-
fully acknowledge the members of the 2004 Traffic Calming Committee. These
participants worked closely with NTMP staff during the revaluation of the NTMP
process to establish threshold requirements and project ranking for prioritization of
future traffic calming projects.
A. Gail Boorman, RLA, ASLA, Chairperson
• Karen Homiak, MPO's Citizen Advisory Committee
• Sully Barker, MPO's Citizen Advisory Committee
• Reed Jarvi P.E., Vanasse $ Daylor LLP
• Chief Don Peterson, Golden Gate Fire Department
• George Archibald, P.E., City of Naples
Collier County Staff:
Don Scott, Director Transportation Planning
• Dale Bathon, Principal Project Manager
• Lt. Harold Minch, Collier County Sheriffs Office
• Chris Gonzalez, Collier County Sheriffs Office
• Russ Muller, Collier County Engineering
• Joe Quinty, Principal Planner
• Jeanne Marcella, Planning Technician
• Donald Schneider, Project Manager MTMP
Other Resource Providers:
David Engwicht, Co Founder Creative Communities International
Collier County Neighborhood Traffic Management Program NTMP 51