News

Better timing for seasonal load restrictions with connected sensors

By Bill Holloway Researchers at the University of Massachusetts, Dartmouth, have developed a new way to monitor the underground sensors that help states determine when seasonal load restrictions (SLRs) should begin and end. States impose SLRs during times when roads are particularly vulnerable to

New technology helps avoid bus-pedestrian crashes

By Mary Ebeling A simple Google search on “pedestrian transit bus collisions” yields dozens of results, showing these tragedies are all too common. Many of the crashes involve left-turning bus operators reporting not seeing pedestrians in the crosswalk. A new warning system being tested in

Conductive concrete melts ice

By Chris McCahill A new type of pavement developed at the University of Nebraska could keep bridges and other surfaces clear during inclement weather without using heavy equipment or chemicals. The product is a concrete mixture that conducts just enough electrical current to melt ice and snow,

New report draws attention to need to focus on multimodal transportation

By Mary Ebeling NCHRP Project 20-24 89(B) , “The Role and Value of Transportation in America’s Economy,” highlights the need to develop a collective appreciation for the modern demands on the nation’s multimodal transportation system. The research team considers four thematic case studies

Sustainability rating tools studied for use in Colorado

By Robbie Webber Researchers at University of Colorado and Colorado State University looked at the suitability of 11 transportation sustainability rating tools (TSRTs) for use by the Colorado Department of Transportation based on agency use preferences. They found that the INVEST tool from FHWA

Researchers suggest using Google Street View and Walk Score to conduct pedestrian safety studies

By Chris McCahill Pedestrian safety and the effects of environmental features are important considerations in cities everywhere. However, studies on the subject typically rely on two uncommon sources of information: pedestrian volume counts and street audits. Researchers at Columbia University

Total VMT and fatalities are up

By Bill Holloway Total 2015 U.S. motor vehicle travel is expected to reach record levels, and crash-related fatalities have been climbing as well. According to a new post in Fastlane, the official blog of the U.S. Department of Transportation, based on data through last November, it is likely

Parking increases citywide car use, SSTI researcher finds

By Chris McCahill Automobile use has been on the rise in cities for nearly a century and so has the supply of parking. Because driving often seems unavoidable, policymakers, developers and the public push endlessly for more parking to meet demand. That push, however, might only be making matters

Do HOV to HOT conversions decrease carpooling?

By Robbie Webber A study from Texas A&M asks whether carpooling decreases when lanes are converted from high-occupancy vehicle (HOV) lanes to lanes allowing solo drivers to pay a toll. Their conclusion: it depends. The researchers studied eight roadway segments in six states and found that

Accommodating interregional travel: Insights and opportunities

By Mary Ebeling The Transportation Research Board Special Report 320, Interregional Travel: A New Perspective for Policy Making, offers important insights into interregional travel. This category, defined as trips between 100 and 500 miles, makes up approximately three-quarters of long distance