research

Insurers taken to task for ignoring drivers’ mileage when setting rates

By Bill Holloway A recently released study from the Consumer Federation of America (CFA) has found that insurers rarely give low-mileage drivers much of a break on their rates despite the fact that mileage driven is one of the best predictors of insurance claims, and most consumers feel that

Major cost overruns common among megaprojects

By Chris McCahill Megaprojects, which have been in the news lately—see Bloomberg and the New Yorker—due to issues with Seattle’s Alaskan Way Viaduct replacement project, frequently experience significant delays and cost overruns, according to researchers at Oxford University. But this

Drivers more likely to ignore crosswalks at speeds above 30 mph

By Chris McCahill High-speed travel in urban areas poses many risks, including a narrower field of vision, longer stopping distances, and increased risk of injury during a collision. According to a new study published by the Transportation Research Board, however, drivers traveling at higher

Learning from better bicycle/vehicle crash reporting: Improving safety and infrastructure

By Mary Ebeling A recent study published in the journal Injury Prevention makes a strong case for better bicycle/motor vehicle crash reporting as a way to improve bicycling safety. The quality of these crash reports currently varies widely, with helmet use and use of other protective equipment

Research shows the indirect economic benefit of public transportation

By Robbie Webber A study done by Cambridge Systematics for NCHRP Project 20-65 examined the indirect economic benefits to society of state investment in public transportation. The study found there are substantial cost savings to other government programs due to increased access to jobs, health

New critique identifies troubling errors in FHWA’s report on driver distraction from digital signs

By Bill Holloway It is common wisdom that driver distraction, whether due to texting, talking on the phone, or other causes, increases the risk of crashes. A 2006 Virginia Tech study found that 80 percent of crashes involved driver inattention in the three seconds preceding the event. The federal

Real-time transit data in demand

By Robbie Webber A recent study has shown that real-time arrival data for buses does indeed boost transit usage. And several cities have discovered that they don’t have to do all the work of getting the information into riders’ hands. Although regular transit riders love the convenience of

New survey results highlight key obstacles to bike ridership

By Bill Holloway A new survey commissioned by People for Bikes finds that, along with concerns about infrastructure and cars, equity-related issues loom large among the obstacles to higher bike ridership. Among the more than 16,000 people surveyed, 48 percent lived in a household without an

Researchers apply travel time reliability measures in modeling and project evaluation

By Chris McCahill Transportation planners and traffic analysts who typically measure road performance in terms of delay are beginning to incorporate measures of travel time reliability, which describe the hourly and daily variation in travel times due to congestion and transit delay. These

Head’s Up! New tools to improve warning signs

By Mary Ebeling Roadway signs play an important role in our travel environment, influencing safety for auto, bicycle, and pedestrian modes. Yet in our daily travels these signs tend to fade into the background environment rather than heightening our awareness. A new study, published in the