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Agenda 11/09/2010 Item #16A 9 ~ . .' .",. 'i, ",,-- --,- ^--~",,:,'~"'----' ..._~,:':' .~-,.'.- . ':'~:L:,; -.:t:.--;..;:- ..,;. EXECUTIVE SUMMARY ~!; ", _, ::',' _.::i Recommendation to .capt a Speed Limit Study Report ad adopt a Resolution of,~H!joaraof County C~'of Collier County, Florida, authorizing a speed limit deereae~'~e miles per hoar (451~ to thirty-five miles per hour (35 mph) on Lake Traffonl.........,SR D (N lStll St) to ~.... at a cost of approximately $600.00. . :. . OB.JECQY.I: To request the Board to accept a Speed Limit Study Report and adopt a Resolumn of the Board of County Commq.inners (Bee) to decrease the speed limit on Lake Traffoni Road from SR 29 to Carson Road. . CONSIDERATIONS: Roadway and traffic;...signal plans are cmrently being designed to reconstruct the intersection' of Lake Trafford Road at SR29. As a part of this design process, an engineering and traffic investigation study was roc:eot1y conducted Collier County Traffic Operations on Lake Trafford Road west of SR 29. Florida Statutes require that the cJum.ge of.'speed mnevalues as outlined in Sections. 316.183....33116~189 F.S. be based upon an ~ and fratlic investigation study. The investigation is to inclu&!:ltut is not limited to, the measuremea1s of prevailins.speeds and other traffic engineering evaluations contained in the "Speed Zoning. for High~ RoadS and.$treets in Florida" manual (FOOT'Manual NlDIlber 750-010-002, 1997 Edition). This ~I was' developed by the Florida Department of Tiansportation to promote uniformity in the establiflhment of state, mUnicipal and county speed zones throughout the State of Florida. . Upon completing an. engineering and 1raftic inv.esti. . .gation stUdy, Section 316.189 F.S. provides that the Board of County Commi~ners may set speed zones after the investigation determines such a change is reasonable and in conformity to criteria promulgated by the Florida Department of Transportation. The completed engineering and traffic investigation study found that a lower speed limit of 35 mph on the designated section of Lake TraffordR.oed. from SR 29 to Carson Road is warranted; and that the change is reasonable and in conformity with the defined criteria. FISCAL IMPACT: The estimated cost of installing the 3S mph speed limit signs and removing the existing 45 mph signs will be approximately $600.00 and is budgeted with the Traffic Operations budget Fund 101. LEGAL CONSIDERATI~li This .item has been reviewed and approved by the County Attorney's Office and is legally sufficienttbr Board action-SRT. GROWTH MANAGEMENT IMPAQ: ..1bis action will result in no growth m~ent impact. RECOMMENDATION: That the ~ of County Commissioners accept a Traflic Speed Limit Study and adopt the Resolution decreasing the_Jimit on the designated section of Lake Trafford Road, authorize the Chairman to execute the Resol "'i~ ". auth~staffto erect the appropriate traffic oontrol signs. '" ,(1):.-,lutioo; (2) '~~,~~~):' < ,'~ Project Manager, Traffic Engineering Depa&twent, Growth > and Mai~~ Prepared By: Dale B~PB,. Management Division-QqtlSt " . Study Report Agenda Item No. 16A9 November 9,2010 Page 2 of 16 . COLLIER COUNTY BOARD OF COUNTY COMMISSIONERS Item Number: Item Summary: 16A9 Recommendation to accept a Speed Limit Study Report and adopt a Resolution of the Board of County Commissioners of Collier County, Florida, authorizing a speed limit decrease from fortyfive miles per hour (45 mph) to thirty-five miles per hour (35 mph) on Lake Trafford Road from SR 29 (N 15th St) to Carson Road at a cost of approximately $600. 11/9/20109:00:00 AM Meeting Date: Prepared By Dale A. Bathon, P .E. Project Manager, Principal Date Transportation Division Transportation Engineering & 10125/20104:50:50 PM Construction Management Approved By Anthony Khawaja Engineer Date Growth Management Traffic Operations 10/26/201010:16 AM Division Approved By Norm E. Feder, AICP Administrator - Transportation Date . Transportation Division Transportation Administration 10/26/201010:54 AM Approved By Lisa Taylor Management/Budget Analyst Date Transportation Division Transportation Administration 10/261201010:58 AM Approved By Nick Casalanguida Director - Transportation Planning Date Transportation Division Transportation Planning 10/26/2010 11 :25 AM Approved By Najeh Ahmad Director - Transportation Engineering Date Transportation Division Transportation Engineering & 10126/2010 1 :43 PM Construction Management Approved By Scott R. Teach Deputy County Attorney Date County Attorney County Attorney 10/26/20103:16 PM Approved By Natali Betancur Administrative Assistant Date . Transportation Division Transportation Road Maintenance 10/27/2010 11:04AM Approved By OMB Coordinator Date Agenda Item No. 16A9 November 9,2010 Page 3 of 16 County Manager's Office Office of Management & Budget 10/28/201010:33 AM Approved By . Jeff Klatzkow County Attorney Date 10/28120102:41 PM Approved By Therese Stanley Office of Management & Budget Manager - Operations Support - Trans Date Office of Management & Budget 10/30/2010 11 :45 AM Approved By Mark Isackson ManagemenUBudget Analyst, Senior Date Office of Management & Budget Office of Management & Budget 11/1120104:53 PM . . . . . Agenda Item No. 16A9 November 9,2010 Page 4 of 16 RESOLUTION NO. 2010- A RESOLUTION OF THE BOARD OF COUNTY COMMISSIONERS OF COLLIER COUNTY, FLORIDA, AUTHORIZING A SPEED LIMIT DECREASE FROM FORTY- FIVE MilES PER HOUR (45 MPH) TO THIRTY- FIVE MilES PER HOUR (35 MPH) ON LAKE TRAFFORD ROAD FROM SR 29 TO CARSON ROAD. WHEREAS, Chapter 316, Florida Statutes, permits the Board of County Commissioners (BCC) to alter established speed limits on roads under its jurisdiction; and WHEREAS, Lake Trafford Road falls under the jurisdiction of the BCC; and WHEREAS, in accordance with Section 316, Florida Statutes, the BCC may alter such existing speed limits as may be appropriate upon the basis of an engineering and traffic investigation; and WHEREAS, the results of such engineering and traffic investigations determined that the decreased speed limit is reasonable and safe under the conditions found to exist and it conforms to criteria promulgated by the Florida Deparbnent of Transportation and Collier County. NOW, THEREFORE, BE IT RESOLVED BY THE BOARD OF COUNTY COMMISSIONERS OF COLLIER COUNTY, FLORIDA, that: 1. The BCC does hereby establish a 35 miles per hour (35 mph) speed limit on Lake Trafford Road from SR 29 to Carson Road and does hereby direct the County Manager or his designee to erect appropriate speed limit signs giving notice thereof. 2. A copy of this Resolution shall be forwarded to the Collier County Sheriffs Office for proper enforcement of the established speed limits for Lake Trafford Road within the designated segment 3. The effective date of the speed limit increase shall be after written notification to the Sheriff's Office and upon posting of the appropriate signage. This resolution adopted after motion, second, and majority vote favoring same this 9th day of November, 2010. ~ Agenda Item No. 16A9 November 9,2010 Page 5 of 16 ATTEST: DWIGHT E. BROCK, Cieri< BOARD OF COUNTY COMMISSIONERS, COLLIER COUNTY, FLORIDA. . By: Deputy Clerk By: Fred W. Coyle, Chairman Approved as md legal sufficiency By: $. ~L Scott R. Teach Deputy County Attorney . . 2 .'0" "' -.. .. .~ . ; .-. ~~ ~~'. ~. ~ <l '- '~-:'C~>(: ~.~~~ ~;':L ".., ~;o-..' .... or ..\ ..,,~. , ~ . -t.- .'. ~ 'I' ,..- -. :.... ...- "".J...""":." ~ '"" ~ - ......~~ ., - "..... ~,~ "': ...:;.,- '..... ~'.. ;....\ .:,'. ~. ,-- , .. ...;.; '- .-'~t--''-. .- '~::~i;J:':."'~:"", ~~.._: .....". .f': i~:,. ...~~" '11>~"~_ . ~ ~ ~ ....4... '#.. · ~ .-....~~~:~-'~. . ~.:.'. ..~;~.: ;- .... .. -".;,.' " ." ~~..... " ;;.--~ :~..~,::.":-.,6).:" ':~. 0- . __ ....'fit ..... . ". j. '..-I. . ...-t".-, _ ,..: """.F~ ...... ....... ~~"""-. '--- . "...... -.:r ,f _-'. '- . '.'... ~ ~'t):~.t....' ",. .._: ~ "'-.... 4", .-.."t ~... :-. ..4. ..........."...... .. ~....... " "'...r ~. .~--_- ~.h It _..A "'. ~.'- -;... . - _,~ ... .f"...,...... . ....;:,. ....', tt~. ..- ~- l'i'" .~~ ..r;~:,.~...~,..,; ...:~y~.. ...~..,~.~ ,......'r". . ,,--..... \.... -.. '. ,-~ ..~ ~ .~.- ~ ~WIf' .....7.. ". :<. . U,;,...! I'::v.~. ,!.~ .~'" ..". ........ ., ." '~~f :.::.f..."("l... . "'- SPEED LIMIT STUDY REPORT Lake Trafford Road" CR 890 SR-29 (N 15th St) to Carson Road Prepared By: Eugene Calvert, PE, PTOE GROWTH MANAGEMNT DIVISION TRAFFIC OPERATIONS COLLIER COUNTY, FLORIDA October 22, 2010 ~~ lo/zr//tt) I ) I Agenda Item No. 16A9 November 9,2010 Page 7 of 16 . Speed Limit Study Report Lake Trafford Road (CR 890) SR-29 (N 15th St) to Carson Road October 22, 2010 By Eugene Calvert, PE, PTOE CONSIDERATION Responding to an internal reques~, Collier County Traffic Operations has conducted an engineering and traffic investigation study to determine the appropriate speed limit on Lake Trafford Road (CR 890) west of SR-29 (N 15th Street) and east of Carson Road in Immokalee. The primary purpose in the establishment of a speed zone is to improve vehicular and pedestrian safety by reducing the probability and severity of crashes. A speed limit notifies the driver of the maximum operating speed that is considered reasonably safe in optimum weather and visibility condition. It is intended to establish the speed limit which a normally prudent driver can perceive and react safely to driving problems encountered on the roadway. . The establishment and any alteration and posting of speed limits on county streets and roads, as set forth in Section 316.189, F.S., must be based on an engineering and traffic investigation that determines such a posting is reasonable and in conformity to criteria promulgated by the Florida Department of Transportation (FOOT). ROADWAY CHARACTRISTICS Lake Trafford Road is a paved two-way, two-lane road functionally classified as a Rural Collector Highway, connecting SR-29 on the east and Lake Trafford County Park the west. The segment of the roadway in this study is 5,300 feet (1.0 miles) in length. The study roadway segment is characterized with limited clear zone and close-spaced connecting streets and driveways. There are 18 local street intersections and 24 private driveways within this study area. The area is a mixture of commercial and residential land uses. Lake Trafford Road provides access to the Lake Trafford Elementary School, located 0.6 miles west of Carson Road. The two intersections with SR-29 and Carson Road are both signalized. A paved pedestrian/bicycle pathway is located along the north side of Lake Trafford Road. There is only one marked crosswalk for this segment of Lake Trafford Road and a number of pedestrians were observed crossing the roadway outside of any crosswalk during this study. The average daily traffic (ADT) is 11,121 vehicles and the existing posted speed limit is 45 MPH for both directions. . Agenda Item No. 16A9 November 9.2010 Page 8 of 16 . FUTURE DEVELOPMENT There has been a number of site development plans (SOP) submitted for redevelopment of property along Lake Trafford Road. While many of the proposed redevelopments have not yet occurred, the permit process is indicative of the future development along Lake Trafford Road as economics will allow. Plans are currently being developed to reconstruct the intersection of Lake Trafford Road and SR-29; adding additional turn lanes, improving pedestrian facilities and upgrading the traffic signal system. Improvements to the intersection are scheduled for bid letting in June 2011. CRASH HISTORIES A crash history review of the roadway segment for the past three years (2007-2009) has been conducted. In 2007, there were 16 crashes reported for the 1 mile study corridor, including 7 rear-ends, 2 left-turns and 2 pedestrian/bicyc1e crashes. In 2008, a total of 9 crashes were recorded including 2 rear-ends, 2 right-angles, and 1 left-turn crash. In 2009, 15 crashes have been reported which included 6 rear-ends, 3 left-turns, and 2 crashes involved with pedestrian. . SPEED INVESTIGATION Florida Statutes require that the change of speed zone values as outlined in Sections 316.183 and 316.189 F.S. be based upon an engineering and traffic investigation. The investigation is to include, but is not limited to, the measurements of prevailing speeds and other traffic engineering evaluations contained in the "Speed Zoning for Highways, Roads and Streets in Florida" manual (FOOT Manual Number 750-010-002, 1997 Edition). This manual was developed by the Florida Department of Transportation to promote unifonnity in the establishment of state, municipal and county speed zones throughout the State of Florida. Three types of data were utilized in determining the prevailing speed: 85th percentile speed - the speed which 85% of the motorists drive at or below, the upper limit of the 10- mph pace and the average test run speed. The reasoning behind the foregoing investigations is that the majority of drivers travel at reasonably safe speed for the various roadway conditions encountered, and that these investigations help determine what may be reasonable speed limits. A speed study was conducted on January 20, 2010. The following data were collected: Location: Lake Trafford Road - 1/2 mile west of SR 29 . 85th percentile speed: Eastbound = 40.4 mph Westbound = 40.2 mph IO-mph pace speed: Both East and Westbound::; 30 mph - 40 mph Field test run speed::; 35-40 mph ") .... Agenda Item No. 16A9 November 9.2010 Page 9 of 16 ANAL YSIS According to the above referenced FOOT speed zoning guidelines, a speed limit should not typically differ from the 85th percentile speed or upper limit of the 10-mph pace by more than 3 mph and it should not be less than 8 mph. A speed limit of 4 to 8 mph less than the 85th percentile speed shall be supported by a supplemental investigation, which identifies the following: . · There are road or roadside features not readily obvious to the normally prudent driver, such as length of section, alignment, roadway width, surface condition, sight distance, traffic volume, crash experience, maximum comfortable speed in curves, side friction (roadside development), signal progression, etc. Based on the guideline, the measured 85th percentile speed of 40.4 mph on eastbound and 40.2 mph on westbound, as well as the 10-mph pace speed of 30 - 40 mph on both directions would normally yield a 40 mph speed limit. However, considering the pedestrian activities, the crash history, the side friction, the limited clear zone, and the number of intervening driveways and street intersections within this segment; it is appropriate to set a 35 mph speed limit for this segment of the road, 5.4 mph less than the 85lh percentile speed. Field vehicle test runs also indicated that 35 mph is safe and comfortable speed to travel on the subject roadway segment. RECOMMENDATION The study found that a 35 mph speed limit is an appropriate and safe speed for Lake Trafford Road from SR-29 to Carson Road. This speed limit should be used for the design criteria for all future roadway and intersection improvements. Therefore, it is recommended to reduce the speed limit from 45 mph to 35 mph on Lake Trafford Road (CR 890) from SR 29 (N 15th St) to Carson Road. . G:\Engineering Scclion\Traffic StudicslSpccd Limit Sludies\La.kc TratTord Road . 3 Agenda Item No. 16A9 November 9,2010 Page 10 of 16 . Lake Trafford Road - Speed Limit Study . Immokalee, Florida . 4 ; 1*' r,lI.:: rllkl Im.n"': lkCMI ! ; ~..! ;~ .!~ lotif HI ::. 0: 10 ~!l J:, ". OIl (-~ ;~. (': .;j c: (' L -' .;i' {O:(X, C'" ;: &: :~ ,~- ~)~ L' t~ !: (!., .~ V" v,(k 'll'-.:' ;~ L (11. .:. If r. Ii" c,- v' ..' 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CoiUier CODDll' T ransDortatiob Dept Tlilffic OPt.'TlltJons l'eclmician; lui:; rruilllo llflcl : LAKE TRAFFORD RD Site: 11910t0IOOOI TIlIel ' W OF SR.19 Dart:: 01 20nO T::lej IM\tOKALf.F Direction: EF! ~n ... ftl\Jl H4 15.19 20.24 2).;>~ 1(.J.. 15.N 4C4t 45-49 50..54 ;5-59 60.,,1 6569 1(,-9') "'Ii: ; me MPII ,\!PH MPlI \fPH \-WI: Mi'H .\~1I ~;:>11 \IPll M?H \'PH \fi'll \1?H 1:\.\1 19 0 n 1 9 " " /I ,x (:1 (Il) I) (I 0 (! .' J; O~~ JQ (l 0 " P Q3...J e 0 (l (. ~ 40 (u [(I (,S 1 1 13 13 ;4 q H (': _l"j 170 14 26 '} 56 2& " -, 34 J. :-....lYI j62 I B ~ 14& lOr. .N l~ 33 .: (\1 HO U 6 12 ii 16) 145 ,If ., 3S f: (:~) _l!~ (l 3 5 .~ 97 WI) 54 I' J7 .. \olltiU 275 I 2 ~) ~5 ~Ii '( 1 " 36 J. j!j 0') 2~3 (1 15 54 100 ~17 'I 36 Ii .j(} i6' 0 ~l 71 9~ ): 11 I .M :: 1'\1 ~~ 0 ;:9 gJ 114 ~S ./ " J6 01l11J '" 0 12 26 <n 97 ~I 1,1 " 15 i}: C) JJ, I 3 ':7 UI Iii ~ " H " J.' 1') 1~'I t) Iii 01 119 I !J :c ~~ iA:r..) ~ 72 I i7 ~:'> i2~ Iii j~ II -sl ;;:';,) r- 9 25 95 ;;() 73 :4 4 ~i .0 fi',c"l!' 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T rafflC CJpcnHions 1 cclmici3n LuIS TrLjilill , LAKE TRAFmRD RD W Of SfI.2l1 Silt O:lre' I 'QIQ:;:;I000i 11/20:10 lJ ~ {.'6', JMMOL"r,E~ Dirc;;licn WB Ty..,j ... ! ~.l~ ~v.-:4 ~5.2"~ .l;~j<: jl." .:1iW'; J'..N 50-S" IL~9 t>t~ t5.bC ~(~-90 t ...,. ',p~ \:?1 :.~P" \tfYr -, I~', ; ,,:~ l';.. :1-, ~;:>1 ~ ...~F: i .-F:, \.i ~ ~ I '-.i V.i' :$ ~C. 0 4H 10 6 ti ;4 0 " (j :" ~ , {1 ,) ,. ; 2A (l } ~:l h 40 1&.1 (i 1 Ie Qt I' J\J D _ih :~; Ij 5 L' y~ ;.5 ~ . -'~ ~5 C 5 2! ry~ j;j :' :+ 2:. 1 , " ,9' 31 = .:.:~ 0 \. f<< ~ - 4 '. -. ~ :",,0 [1 ! ( ~ M ;n- ~< (i ,-1.1 '. ~' . J~- .. }~ j 1X ~ ,r; . f~ . -' ~ ..' .:25 I~ ...f ; ~ '., j~j II j' 1 ~~. I"~ ]1 ~.o_t i'I , -i." 10: 1(., :. !~ . J..J . ~;~ IG : I ,~ I ! t- " '. ~ ! (. ,-, 1: " ~M ;~~ v :,~ " " ~ I " ,,: -. . < i~ 'i " 10'! "'. ~: i : ,,'j-; . -.~ '.-1 , : ... }-. .. 0: '_'> 0: (....) ,).! ,;(: D! ::.:. llf- CO"~ r~ 'x. ('f,:J. (0<,: :r. :'-.. ()) I j If) !2 r~ .~: r,,) :)~ V') .J31)[I .:>lfJt' l)~.\J'f '~'j 1;1.\ :;'111 -:!'-~ It.,':):. i :';.i!~, :1\ ' '" ~';' ~,j<J~ ~ :~'. e 6:(:'(- =(:.6 :' ~ . ~-) ." "" '. ~: ~ ';: ~ .:' ;......: : 55 \if-'ll t< :nPH , ( i,..j ''; . 7 Agenda Item No. 16A9 November 9,2010 Page 14 of 16 . Lak. Trafford Road - 35 MPH speed limit sip_.. . ' .:_~ ~~ ~ .~~ ~-iV1!';T:;::,",,";""~ r,." > tw;a.~'k ".' 0'" ..__----....-:~ .~--~ ci~ ~.". . ~"" " .. ,: ^ :"'.... "-oj:. '" . & Agenda Item No. 16A9 November 9, 2010 Page 1Sof16 Lake Trafford Road - 3S MPH speed limit signale . . . I.) . Agenda Item No. 16A9 November 9,2010 Page 16 of 16 lake Trafford Road - 35 MPH speed limit signage . . EB Instilll Reduced S~.d limit Ahead - 35 MPH IW3.5136. 36 .Loo .'t- r4i , . 10