Found a few references referencing analyses of speed-injury severity relations but nothing that goes so far as to conclude a particular speed as the most efficient, though that looks like it wants to around page 66.
CityCyclingEdinburgh Forum » Debate!
Getting more people cycling - what works
(37 posts)-
Posted 12 years ago #
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Well with a title like "STUDY OF OPTIMAL TRAVEL SPEED LIMITS FOR SHARED TRAFFIC" you'd think there'd be something!
Haven't read it all!
"
CHAPTER VIII CONCLUSIONSThis project is concerned with the determination of vehicle speed limits for roadways that are shared with pedestrians and bicyclists. The center issue is the reduction of auto crashes involving pedestrians and bicyclists on these roadways.
The literature on relationships between vehicle speeds and pedestrian/bicycle crashes was reviewed. State and Federal statutes and regulations concerning the establishment of speed limits and, in particular, speed limits no more than 25 mi/h, were studied. A methodology based on the logistical regression concept that can help to determine the relationship between pedestrian/bicyclist crash severities was developed. The relationship was used to propose speed limits in response to different injury level requirements for different roadway characteristics. Also developed were methods to conduct the operational impacts of the selected roadway speed limits. The actual selection of the speed limit for a given roadway may have to consider both its injury severity impact and its operational implications. Foundations for both assessments were provided.
From the results of the study, we can make the following recommendations:
• When pedestrian/bicyclist safety is used as a primary criterion for setting speed limits, different safety standards should be used for urban and rural roadways.
• Factors other than geometric and traffic conditions, such as light condition and weather, can greatly affect the safety of a roadway; so differentiated speed limits for different light and weather conditions might be considered.
• Safety should be used in concert with other operational impacts including total travel times, average vehicle delays, percent stops, fuel consumptions, and vehicle emissions, to arrive to appropriate speed limits.
• A cost model encompassing impacts from vehicle-vehicle collisions, vehicle-pedestrian/bicycle crashes, and other operational factors may be the most appropriate one to be consulted with while setting speed limits for roadways.
PAGE 80Posted 12 years ago # -
Could do with some of these.
Swindon traffic lights to slow speeding drivers.Posted 12 years ago # -
"Whilst BoJo might advocate cycling it's in danger of being tainted with the buffoonish cartoonish aspect of his decoy outer casing."
As seen in a Telegraph Stylish Celebrity Cyclists slideshow.
P.s. I know hardly any of the other 'celebrities'.
Posted 12 years ago # -
"While not advocating for the parent company, the Skyrides concept seems quite a nice intro for non/occasional cyclists"
"Olympic Gold medallist Victoria Pendleton will be taking part in Cycletta sponsored by Sky Ride, a unique series of women-only, mass participation events, created for women to cycle for fitness and fun in the perfect environment and to inspire more women to take up cycling."Posted 12 years ago #
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