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Changing Have you ev Who sets the traffic? How speed limit s answer some What Spe Speed limits of the majori drivers natur or not too fas to go safely a Speed limits the speed co on a particu unfamiliar w evaluate how safer driving drive at the s Setting S State law* re at the state studies show The law sets • 75 mph • 70 mph interstat • 65 mph How are spee governments Transportatio in accordanc in the Man (MUTCD) a Commission. limits are app limits, the Commission requests for made to their g a Speed Lim er wondered how s em? Does lowerin do you get one ch solve a problem? e of these questions eed Limits Do are established to r ity of drivers on a rally select a comfo st, but one that will and without undue are posted primar nsidered reasonabl ular roadway. M with the road, can w they should driv g environment is e ame speed. Speed Limits equires speed limit maximum, unles w a need to lower the state maximum for turnpikes and c h for four-lane di tes and super two-l for other locations ed limits set? Whe and the Ok on (ODOT) must c ce with traffic engi nual of Uniform adopted by the . Speed limits o proved by the Com speed limits are but usually with speed zone studie r local ODOT divis mit speed limits are de ng speed limits slo hanged? Would ch This brochure w s. o reflect the reasonab particular roadwa ortable speed, not l get them where th delay. rily to inform mot le by a majority o Motorists, especial n use this inform ve on a particular established when m ts on state roadway ss traffic and eng a limit for safety m at: certain rural interst ivided highways i ane highways s on the highway sy en setting speed lim klahoma Departm conduct engineering ineering practices Traffic Control Oklahoma Transp on highways outs mmission. When in e still approved city concurrence. es on highways sh sion office. termined? ow down hanging a will help ble speed ay. Most too slow hey want torists of of drivers lly those mation to road. A motorists ys be set gineering reasons. tates including ystem mits, city ment of g studies as stated Devices portation side city nside city by the Citizen hould be ODO the on c tran *Spe scho moto med elec info 801 Sp Spee perc majo soun high Spee perc vehi calc refle mad wea Othe such cras gene The 85th perc the v situa amo cond hidd cras Onc sign max OT only has jurisd state highway sys city streets or coun sportation departm ecial situations ex ool buses, school orcycles, motor-d dium speed electr ctric personal assi rmation on these, s through 806. eed Zone Stu ed limits on Oklah centile method, w ority of drivers wil nd engineering pri hways nationwide f ed studies are c centile speed. Th icles is tallied a culated using gathe ection of a normal de on weekdays du ather conditions. er data collected h as curves, surface sh history, cross str erate traffic. speed limit is nor h percentile speed centile speed is tha vehicles are traveli ations, the posted s ount below the ditions are present den street returns, h sh ranking. ce the study is com ns are posted along ximum legal speed diction over setting tem. Questions a nty roads should b ments of those local xist under Oklahom l zones, state pa driven cycles, sco ric vehicles, elect istive mobility dev see Oklahoma State udies homa highways ar which represents ll be traveling at or inciple used to set for the past 60 year conducted to dete he observed free-fl and the 85th per ered information. l traffic situation, uring off peak hour typically shows r e width and type, ri reets, school crossi rmally set at the ne d ending in a 5 o at speed at or belo ing during the stud speed limit may be 85th percentile t, such as: narrow high number of dri mpleted, black-on-w g the highway to al for a particular sec g speed limits on about speed limits be directed to the governments. ma State Law for arks, solid tires, ooters, low and tric gopeds, and vices. For more e Statutes §47-11- re set by the 85th the speed the r below. This is a t speed limits on rs. ermine the 85th flowing speed for rcentile speed is To ensure a true speed studies are rs under favorable roadway features ight of way width, ings and sites that earest value to the or 0. The 85th ow which 85% of dy period. In rare e lowered a small speed if some pavement width, iveways, and high white speed limit lert drivers of the ction of roadway. Speed limit the penaltie Can a Sp There are dis the 85th perc unreasonably drive that sl develop disre When a spee enforcement being tickete motorists who Safety is Most traffic simple soluti sometimes m a particular p control tool s Research ha reasonable sp reduce the nu may increase ts may change es do not. Drive eed Limit Be sadvantages to sett centile speed. If y low speed limit lowly, they tend espect for speed lim ed limit is set below officials must dea d for exceeding th o drive too fast. the Primary problems are not ions. Requests fo made with the admir roblem. However, olve all the traffic p s shown that spe peed of most dri umber of crashes o with unreasonably periodically; ho Oklahoma frien e Too Low? ting speed limits fa reasonable drivers without seeing a to ignore the sig mits in general. w the 85th percen al with reasonable he posted limit, as Concern t simple and do n or lower speed lim rable motive to “qu , rarely does a sing problems in a com eed limits set be ivers do not sign on a road. In fact, y low speed limits. owever, ndly. ar below s see an need to gns and tile; law e people well as not have mits are uick fix” le traffic munity. low the ificantly , crashes
Object Description
Okla State Agency |
Transportation, Oklahoma Department of |
Okla Agency Code |
'345' |
Title | Setting speed limits. |
Alternative title | Speed studies |
Authors |
Oklahoma. Department of Transportation. |
Publisher | Oklahoma Department of Transportation |
Publication Date | 2011 |
Publication type |
Brochure |
Subject |
Speed limits--Oklahoma. Traffic safety--Oklahoma. |
Purpose | Changing a Speed Limit have you ever wondered how speed limits are determined? Who sets them? Does lowering speed limits slow down traffic? |
OkDocs Class# | T1300.1 S495s 2011 |
Digital Format | PDF, Adobe Reader required |
ODL electronic copy | Downloaded from agency website: http://www.okladot.state.ok.us/traffic/collision_analysis/images/speedstudies.pdf |
Rights and Permissions | This Oklahoma state government publication is provided for educational purposes under U.S. copyright law. Other usage requires permission of copyright holders. |
Language | English |
Date created | 2012-06-08 |
Date modified | 2012-06-08 |
OCLC number | 890218913 |
Description
Title | speedstudies 1 |
Full text | Changing Have you ev Who sets the traffic? How speed limit s answer some What Spe Speed limits of the majori drivers natur or not too fas to go safely a Speed limits the speed co on a particu unfamiliar w evaluate how safer driving drive at the s Setting S State law* re at the state studies show The law sets • 75 mph • 70 mph interstat • 65 mph How are spee governments Transportatio in accordanc in the Man (MUTCD) a Commission. limits are app limits, the Commission requests for made to their g a Speed Lim er wondered how s em? Does lowerin do you get one ch solve a problem? e of these questions eed Limits Do are established to r ity of drivers on a rally select a comfo st, but one that will and without undue are posted primar nsidered reasonabl ular roadway. M with the road, can w they should driv g environment is e ame speed. Speed Limits equires speed limit maximum, unles w a need to lower the state maximum for turnpikes and c h for four-lane di tes and super two-l for other locations ed limits set? Whe and the Ok on (ODOT) must c ce with traffic engi nual of Uniform adopted by the . Speed limits o proved by the Com speed limits are but usually with speed zone studie r local ODOT divis mit speed limits are de ng speed limits slo hanged? Would ch This brochure w s. o reflect the reasonab particular roadwa ortable speed, not l get them where th delay. rily to inform mot le by a majority o Motorists, especial n use this inform ve on a particular established when m ts on state roadway ss traffic and eng a limit for safety m at: certain rural interst ivided highways i ane highways s on the highway sy en setting speed lim klahoma Departm conduct engineering ineering practices Traffic Control Oklahoma Transp on highways outs mmission. When in e still approved city concurrence. es on highways sh sion office. termined? ow down hanging a will help ble speed ay. Most too slow hey want torists of of drivers lly those mation to road. A motorists ys be set gineering reasons. tates including ystem mits, city ment of g studies as stated Devices portation side city nside city by the Citizen hould be ODO the on c tran *Spe scho moto med elec info 801 Sp Spee perc majo soun high Spee perc vehi calc refle mad wea Othe such cras gene The 85th perc the v situa amo cond hidd cras Onc sign max OT only has jurisd state highway sys city streets or coun sportation departm ecial situations ex ool buses, school orcycles, motor-d dium speed electr ctric personal assi rmation on these, s through 806. eed Zone Stu ed limits on Oklah centile method, w ority of drivers wil nd engineering pri hways nationwide f ed studies are c centile speed. Th icles is tallied a culated using gathe ection of a normal de on weekdays du ather conditions. er data collected h as curves, surface sh history, cross str erate traffic. speed limit is nor h percentile speed centile speed is tha vehicles are traveli ations, the posted s ount below the ditions are present den street returns, h sh ranking. ce the study is com ns are posted along ximum legal speed diction over setting tem. Questions a nty roads should b ments of those local xist under Oklahom l zones, state pa driven cycles, sco ric vehicles, elect istive mobility dev see Oklahoma State udies homa highways ar which represents ll be traveling at or inciple used to set for the past 60 year conducted to dete he observed free-fl and the 85th per ered information. l traffic situation, uring off peak hour typically shows r e width and type, ri reets, school crossi rmally set at the ne d ending in a 5 o at speed at or belo ing during the stud speed limit may be 85th percentile t, such as: narrow high number of dri mpleted, black-on-w g the highway to al for a particular sec g speed limits on about speed limits be directed to the governments. ma State Law for arks, solid tires, ooters, low and tric gopeds, and vices. For more e Statutes §47-11- re set by the 85th the speed the r below. This is a t speed limits on rs. ermine the 85th flowing speed for rcentile speed is To ensure a true speed studies are rs under favorable roadway features ight of way width, ings and sites that earest value to the or 0. The 85th ow which 85% of dy period. In rare e lowered a small speed if some pavement width, iveways, and high white speed limit lert drivers of the ction of roadway. Speed limit the penaltie Can a Sp There are dis the 85th perc unreasonably drive that sl develop disre When a spee enforcement being tickete motorists who Safety is Most traffic simple soluti sometimes m a particular p control tool s Research ha reasonable sp reduce the nu may increase ts may change es do not. Drive eed Limit Be sadvantages to sett centile speed. If y low speed limit lowly, they tend espect for speed lim ed limit is set below officials must dea d for exceeding th o drive too fast. the Primary problems are not ions. Requests fo made with the admir roblem. However, olve all the traffic p s shown that spe peed of most dri umber of crashes o with unreasonably periodically; ho Oklahoma frien e Too Low? ting speed limits fa reasonable drivers without seeing a to ignore the sig mits in general. w the 85th percen al with reasonable he posted limit, as Concern t simple and do n or lower speed lim rable motive to “qu , rarely does a sing problems in a com eed limits set be ivers do not sign on a road. In fact, y low speed limits. owever, ndly. ar below s see an need to gns and tile; law e people well as not have mits are uick fix” le traffic munity. low the ificantly , crashes |
Date created | 2012-06-08 |
Date modified | 2012-06-08 |