Latest News

Growth near transit is key to connecting smaller cities, SSTI finds

By Chris McCahill A new study by SSTI and the Traffic Operations and Safety Lab at UW-Madison provides a partial roadmap to the future for transit in smaller cities. The study gave Eau Claire, Wisconsin—a city nearing 70,000 people—a look into emerging transit technologies and insight on

More highways, more congestion

By Eric Sundquist In pursuit of congestion relief, the United States added 63 percent more urban freeway lane-miles between 1990 and 2017. That rate far outstripped the 46 percent growth in urban population. It didn’t work. As widely reported last month, the Texas Transportation Institute’s

PennDOT CEO emphasizes community engagement, active transportation

By Robbie Webber Pennsylvania’s Secretary of Transportation wants more diversity in decision making; more equal concern for people walking, biking and driving; and more early communication with communities about PennDOT projects. These were the themes of an interview with Leslie Richards

AAA: Red light running is killing us

By Robbie Webber The AAA Foundation reports that fatalities due to red light running is at a 10-year high, and more than half of the deaths were outside the offending car, including pedestrians, bicyclists, and those in other cars. In 2017, the last full year for which statistics are available,

Connectivity is good for walkability, but social factors also matter

By Saumya Jain Most efforts to increase bike and walk accessibility focus on physical access. But the built environment is not the full story. A new study finds that certain attributes of the social environment also greatly affect the perception of walkability, especially among people of

Identifying isolated bike islands in cities, and the bottlenecks between them

By Michael Brenneis A new analytical approach could help identify streets most in need of improved facilities to better connect cycling networks. In Shanghai, researchers used high-resolution dockless bike-share trip data, and percolation theory, to identify clusters of cycling activity and the

New mindset needed to address congestion, says MassDOT

By Chris McCahill A new report from the Massachusetts DOT dives into the state’s growing traffic congestion to understand the causes and potential solutions. It points to the rapid outward growth around Boston as one of the main causes, and suggests the current situation calls for bold new

Use of multimodal accessibility metrics in project prioritization and investment

By Saumya Jain The Accessibility Observatory at the University of Minnesota recently released a one-of-a-kind report that ranks the country’s 50 largest metropolitan areas (by population) according to accessibility to jobs via bicycle. The report is a product of a multi-year study, where the

E-bikes mean longer, more frequent bike trips

By Robbie Webber On June 18, the Madison, WI, bikesharing system became the first in the U.S. to switch its entire fleet to electric pedal-assist bikes, although other cities have been adding e-bikes to their fleet for several years. Results from a comparison of e-bike vs. standard bike usage

Autonomous boat “bridge” proposed in Amsterdam

By Michael Brenneis A group of autonomous vessel developers is proposing a new way to move people through the unique urban-aquatic environment of Amsterdam. The Amsterdam Institute for Advanced Metropolitan Solutions has teamed with the Massachusetts Institute of Technology to push the limits of

Proximity to highways affects long-term school performance

By Robbie Webber A study from the National Bureau of Economic Research extends our knowledge of the effects of attending school near major roadways. Previous studies have found short-term effects on test scores, behavior, and school absences on days of poor air quality, but this new research

Overabundant parking fuels car-oriented living in greater Boston

By Chris McCahill A new report from the Metropolitan Area Planning Council reveals 30 percent of residential parking in the Boston area goes unused at night. This new study builds on an earlier report, featured in an SSTI webinar, growing the sample from 80 properties to 189 across 14

Invisible women

By Beth Osborne Research and design are based on a test case human who stands in for the broader population. The default human that is the basis for research and design projects is usually a white adult male. As a result, projects often come to conclusions that do not address the needs of women,

A new technique to identify deteriorating infrastructure using satellite data

By Michael Brenneis With budgets that tend to favor new construction, many DOTs are finding it necessary to prioritize the most urgent repairs. But infrastructure decay is not always easily visible. And deferred or inadequate maintenance may occasionally have catastrophic consequences for U.S.

Spending smarter: lessons and opportunities for state DOTs

By Chris McCahill Two states that are changing how transportation investments are prioritized were featured recently on an SSTI webinar. Virginia just funded a third round of projects under its Smart Scale program, while Hawaii piloted its own SmartTRAC program with help from SSTI and Smart