speed limit

Safety and speed management: Speeding into a crash?

By Saumya Jain According to a recent study conducted by the Insurance Institute for Highway Safety (IIHS), in the past 25 years 37,000 additional people have died due to increased speed limits in the United States. However, Canada is taking a very different approach to speed, as detailed in the

Lowering speed limits can reduce crashes

By Chris McCahill Speed limits are often based on observed 85th percentile free flow speeds. Setting them lower, even to address safety concerns, can be difficult once engineering recommendations have been made. A new study, however, bolsters the case for doing so by showing that setting limits

In Ohio, speed limits go up—and with them crashes, injuries, and deaths

By Eric Sundquist Like many other local, state, and federal transportation agencies, the Ohio DOT has a zero crash death goal. However, a 2013 law to raise speed limits on nearly 1,000 centerline miles is making that goal harder to reach, according to a recent study by the state Department of

Study of variable speed limits highlights the trade-off of throughput and safety

By Sam Sklar Varying a posted speed limit based on current conditions can improve operations and safety in congested work zones, a team from Missouri found.  This study from the University of Missouri-Columbus, called “Evaluation of Variable Advisory Speed Limits in Congested Work Zones,”

Researchers explore links between speed and safety

By Chris McCahill As states experiment with increasing and lowering speed limits on rural highways, questions still remain as to what effects those changes might have on safety. At this year’s annual meeting of the Transportation Research Board, researchers trying to answer some of those

Vision Zero spreads across the U.S.

By Robbie Webber In 1997, Sweden undertook a road safety project with an ambitious goal: No traffic fatalities or serious injuries. A core principle of Vision Zero was that, “Life and health can never be exchanged for other benefits within the society.” This is in contrast to the cost-benefit

Roads designed for speed undermine safety initiatives

By Chris McCahill A version of this article originally appeared on the League of American Bicyclists’ blog. Despite gradual improvements, the U.S. is falling behind its peers in terms of traffic safety. Making matters worse, our nation’s most vulnerable road users—pedestrians and

How Paris is making the pedestrian a priority

By Chris Spahr Paris recently made the bold move of implementing a citywide 20 mph speed limit. While some smaller cities across the globe have implemented this policy and others have put stricter speed limits on certain streets, Paris is the first city of its size to enforce a citywide 20 mph

Phoenix aims for slower, more pedestrian-friendly downtown streets

By Robbie Webber A new study of transportation options in downtown Phoenix aims to improve walking, biking, and transit, as well as prioritize amenities for pedestrians, in order to revitalize the area and encourage people to spend time downtown instead of just getting in and out quickly.

Update: St. Louis area variable speed limits come down

By Bill Holloway Missouri DOT is removing 70 variable advisory speed limit signs on I-270 and I-255 mentioned in the October 14th edition of SSTI News. Although a recent report indicated that similar signs have been having a positive effect on congestion in the Minneapolis area despite drivers’