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Residential exposure to local traffic emissions associated with higher risk of stroke

By Yicong Yang A recent study finds that long-term residential exposure to locally emitted black carbon (BC)—primarily from traffic exhaust—is associated with higher stroke incidence. BC comprises a significant portion of particulate matter. Although BC is a known health hazard with health

Priced parking is fair and effective at lowering car use

By Chris McCahill New research out of California looks at the effect of priced parking on commuter mode choice and transportation costs for low-income households. Findings from two studies suggest raising the price of commuter parking by 10 percent could lower car use by as much as three

More sharp curves make roads safer

By Michael Brenneis Unlike other risk factors such as speed or impairment—where more is not safer—increasing the number of sharp curves on a road segment appears to lower the risk of crashing, according to a new paper in the journal Accident Analysis & Prevention. Curves carry a level of

Parents don’t always agree with practitioners about safe cycling routes for kids

by Rayla Bellis Bicycle Level of Traffic Stress (LTS), a system for rating bicycle routes from low- to high-stress based on factors like vehicle speed and separation from traffic, has been gaining traction nationwide as an approach for identifying needed investments, evaluating the overall

Inequities in allocation of bike infrastructure investments

By Saumya Jain The pressing need for safer active transportation infrastructure cannot be overlooked anymore, with 2019 being the deadliest year of the century for pedestrians and cyclists. Although federal spending on active transportation increased from $6 million to $835 million from 1990 to

New study shows cataract surgery improves driving safety

By Yicong Yang Although alcohol, speeding, and distracted driving are the major sources of injuries and fatalities on the road, being able to see well cannot be underestimated. As drivers age, the occurrence of cataracts increases, and they can be a significant barrier to safe driving. A new

Global SUV sales undo gain from electric vehicles

By Robbie Webber Electric vehicles have the potential to significantly reduce emissions and the climate impact of transportation. But the global increase in SUV sales—led by but not exclusive to the U.S.—is more than neutralizing these reductions. That is the message from an analysis of the

Auto-braking is becoming more common, but the tech is still evolving

By Eric Sundquist One hope for reversing the growing death toll among pedestrians and cyclists lies in technology that senses crashes before they happen and avoids them. In 2015, NHTSA, with support from the insurance industry, reached an agreement with most automakers to ramp up installation of

Gender biases in transit planning

By Saumya Jain “The default human that is the basis for research and design projects is usually a white adult male.” Despite efforts to close the gender gap in many aspects of life, there are still some industries and activities where the gap hasn’t even been identified properly. One such

Some bias is evident when ticketing speeders in Burlington, Vermont

By Michael Brenneis The negative safety effects of speeding are well established. The enforcement of speed limits is justified to reduce crashes. But does officer discretion when giving tickets result in bias against one group or another? The results of an analysis of speeding stops in

TRB provides playbook to TNC-transit partnerships

By Robbie Webber Transit agencies have increasingly partnered with transportation network companies, such as Uber and Lyft, to supplement fixed-route services. TNCs are used to extend service to less-dense areas of a community, provide first- and last-mile connections, operate on weekends or

Transportation affordability key to housing market resilience

By Chris McCahill A new study looked at more than 300 metropolitan areas across the U.S. to understand which ones saw foreclosure rates drop the fastest during the economic recovery period between 2011 and 2014. The authors call this “housing market resilience.” It found that some of the most

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

Does active transportation add to overall physical activity, or substitute for other exercise?

By Rayla Bellis New research in the Journal of Transport and Health investigates whether people who spend more time walking and biking daily to work and errands in the U.S. and the Netherlands spend less time exercising overall. The study findings indicate the opposite—the likelihood of

It’s not distracted walking that is killing NYC pedestrians

By Michael Brenneis “[NYC]DOT found little concrete evidence that device-induced distracted walking contributes significantly to pedestrian fatalities and injuries.” So concludes a recent report examining whether device-distracted walkers are killing themselves by stepping out in front of