infrastructure

People weigh risk versus convenience in whether to use pedestrian bridges

By Chris McCahill Pedestrian bridges may help keep people away from heavy traffic, but only if people are willing to use them. And that often isn’t the case, according to a new study in Accident Analysis & Prevention. People will cross at street level to avoid tall or narrow, constrained

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.

In Denmark, bicyclists more law abiding when facilities present

By Robbie Webber We have written before about studies that find bicyclists in the U.S. break the law at about the same rate as motorists, although for different reasons. Now a study in Denmark finds that, although Danish cyclists break the law at a far lower rate than in the U.S., the prevalence

Sidewalk evaluation app Project Sidewalk launches in Seattle

By Michael Brenneis Project Sidewalk, newly launched in Seattle, is crowdsourcing the evaluation of sidewalks and ramps with the intent to help DOTs locate and prioritize needed repairs and improvements, educate the public, and collect data to train AI. Poorly planned sidewalks and ramps, those

Cambridge enshrines protected bike lanes into law

By Robbie Webber Cambridge has become the first city in the U.S. to require protected bike lanes on reconstructed streets, if those streets are part of the city’s 20-mile bicycle network plan. This is not just an internal policy, but is included in municipal ordinance. And being legally

Report presents best practices guide for implementing Tactical Transit Lanes

By Chet Edelman Bus Rapid Transit or BRT has gained popularity in recent decades as a more cost-effective alternative to light rail. In its simplest form, BRT entails setting aside an exclusive lane of traffic for buses so they can travel unencumbered by other vehicles. However, a recent report

A method for quantifying risks imposed on cyclists while sharing road with motor vehicles

By Saumya Jain Keeping vehicle occupants and pedestrians safe via engineering standards and street warrants is common practice around the world. But in spite of the growing level of support for bicycling for both commuting and recreation, bike facility design standards are rarely backed by

Study finds improving bike, pedestrian infrastructure cuts driving, CO2 emissions

By Chet Edelman In an attempt to meet CO2 reduction targets, both mandatory and self-administered, cities worldwide are attempting to overhaul their transport infrastructure to limit private vehicle use and encourage more active forms of travel (i.e., walking and biking). While the common

Portland guide to streamline protected bicycle lane design

By Michael Brenneis In the United States, bicycling mode share hovers in the single-digits, while many European countries enjoy double-digit cycling mode share. The difference may be due to the attention European planners and engineers pay to cycling infrastructure. Increasing the active