crashes

All-way stop signs reduce crashes by one-third

By Chris McCahill From 2009 to 2016, the District Department of Transportation (DDOT) in Washington, DC, converted 60 intersections from two-way stops (allowing free flow on the major route) to all-way stop control. A new study in the Transportation Research Record looks at 53 of those

Has reduced travel during the COVID-19 crisis made streets safer?

By Rayla Bellis As more data begins to emerge, COVID-19’s impact on traffic crashes and severity is proving complicated. Collisions and fatalities have declined in many places with data available, though not everywhere. However, collision rates and injury and fatality rates appear to be up in a

Bellevue, WA, plans to use AI to leverage cameras for safety

by Michael Brenneis Agencies that aspire to achieve zero traffic fatalities need to know where to invest for the biggest crash reductions. Advances in artificial intelligence (AI) are allowing DOTs to leverage their existing camera technology in order to extract large quantities of data that can

Active transportation fatalities spike again

By Robbie Webber Although cars are getting safer, saving drivers and passengers from dying on our roads and highways, the number of pedestrian and bicyclist deaths are increasing dramatically. The latest numbers from the National Highway Traffic Safety Administration Traffic Safety Facts show

Los Angeles and San Francisco using data to target Vision Zero efforts

By Robbie Webber As cities commit to Vision Zero, they have started to examine intersections and roadway segments with high crash rates, serious injuries, and fatalities to pedestrians. What they have found is that a small percent of roadways account for a large portion of serious crashes. And

Red light cameras save lives. Turning them off puts lives at risk.

By Michel Brenneis More than half of the fatalities caused by red light runners are pedestrians, cyclists, other motorists, or passengers. Red light running resulted in 811 fatal crashes in 2016, an increase of 17 percent from 2012 when there were 719 fatal crashes, reports the Insurance

Safety benefits of pedestrian crash avoidance systems

By Logan Dredske Autonomous vehicle technology has been touted as a boon to safety, avoiding or mitigating the majority of crashes that are due to human error. Now a new report attempts to put numbers to how many pedestrian crashes could have been avoided or mitigated, and the value of

Does legalized marijuana lead to more car crashes?

By Rayla Bellis As more states legalize recreational use of marijuana, decision makers are seeking to understand the implications for safety and public policy. A number of recent studies have examined whether states that have legalized marijuana are seeing higher incidence of car crashes and road

A near miss: How cities are misinterpreting the safety of streets for bicyclists and pedestrians

By Logan Dredske Crash data on reported collisions may not be telling the whole story about whether our streets are safe for bicyclists and pedestrians. A recent study by the Kinder Institute for Urban Research at Rice University in Houston revealed that crash data for road users may be

Crashes fuel U.S. death-rate increase

By Eric Sundquist A new report from the Centers for Disease Control and Prevention, made headlines last week for showing a decrease in Americans’ life expectancy in 2015—a reversal of a decades-long positive trend. One element of the brief report is of special interest to transportation