Big data shines light on bike and pedestrian trips

New applications in big data could soon let us understand precisely how people move around by bike and on foot, for all types of trips, almost anywhere in the country. SSTI has worked with several providers to better understand the available trip data and its useful applications. We recently tested preliminary pedestrian data, provided by StreetLight Data, with promising results.

Automated vehicles will bring big highway capacity increases

As the transportation field grapples with the impending impacts of automated vehicles, one AV-related outcome seems clear: Highway capacity will dramatically expand. Because automatic braking systems react much faster than human drivers do, safe spacing on freeways can be reduced by about half. As a result, the current rule of thumb that a freeway lane can handle a flow of 2,000 vehicles per hour will be radically changed.

Automated vehicles will bring big highway capacity increases

As the transportation field grapples with the impending impacts of automated vehicles, one AV-related outcome seems clear: Highway capacity will dramatically expand. Because automatic braking systems react much faster than human drivers do, safe spacing on freeways can be reduced by about half. As a result, the current rule of thumb that a freeway lane can handle a flow of 2,000 vehicles per hour will be radically changed.

New research on the benefits of ignition interlock devices

New research finds that states that have passed laws requiring ignition-interlock devices (IIDs) for all drivers convicted of drunk driving have seen a collective 15 percent drop in deaths from drunk-driving crashes compared with rates in states without this requirement. Other studies show that IIDs alone are not sufficient to curb drunk driving. To be most effective, states should adopt IID laws that kick in on the first offense and provide sufficient oversight to monitor continued use of the IIDs.

Mobile apps gaining ground in trucking

Rapid growth in the use of mobile apps is changing the trucking business and could bring congestion reduction benefits as well as efficiency gains. The way truckers with empty trailers find available loads has come a long way from notes on truck stop bulletin boards. The flexibility brought by these applications also provides a backup when scheduled movements are disrupted.

Conductive concrete melts ice

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, while being safe to touch. The material is composed of 20 percent carbon and steel byproducts from industrial processes.

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

Pedestrian safety and the effects of environmental features are important considerations in cities everywhere. But studying pedestrians via street audits and volume counts can be time consuming and costly. Researchers at Columbia University suggest a way to overcome this challenge by using readily available information from Google Street View and Walk Score.

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

Pedestrian safety and the effects of environmental features are important considerations in cities everywhere. But studying pedestrians via street audits and volume counts can be time consuming and costly. Researchers at Columbia University suggest a way to overcome this challenge by using readily available information from Google Street View and Walk Score.