data

Researcher launches open source accessibility toolbox

By Michael Brenneis and Chris McCahill DOTs and planning agencies interested in measuring access to destinations have a growing number of packages and data sources to choose from. Folks not looking to reinvent the wheel are turning to shiny products like Citilabs’ Sugar Access, Conveyal, and

Los Angeles and San Francisco using data to target Vision Zero efforts

By Robbie Webber As cities commit to Vision Zero, they have started to examine intersections and roadway segments with high crash rates, serious injuries, and fatalities to pedestrians. What they have found is that a small percent of roadways account for a large portion of serious crashes. And

Chicago opens TNC data to the public

By Eric Sundquist Getting data from transportation network companies for planning and other purposes has been a challenge. Agencies want to understand where TNCs are operating in order to address curb management, congestion, and transit-cannibalization issues. “It’s not necessarily that we

Parking, ride-hailing, and shifting traveler needs

By Chris McCahill According to a new study out of Denver, one-quarter of ride-hailing trips replace driving, which reduces the need for parking, particularly at specific land uses. Difficulty parking is also a key reason people are shifting to ride-hailing services, which suggests that places

Connected cars and data sharing to improve road safety?

By Saumya Jain Wide scale advancements in technology and data sharing has brought about a change in the decision-making process of many sectors. The healthcare, finance, and entertainment industries all depend on a steady feed of information in order to make business decisions. But data sharing

New multimodal trip data on the horizon

By Chris McCahill StreetLight Data, which provides trip-making data compiled from cellphones and mobile devices, recently announced a new multimodal data initiative called “M2.” The company has offered data from personal and commercial vehicles for several years. SSTI used these data for a

Curbs: A new data frontier

By Chris McCahill State and local transportation agencies have long focused on what’s happening between the curbs—collecting data about the speed, volume, and types of vehicles moving along each road—but growing competition for curb space from parked cars, bikes, taxis, TNCs, and deliveries

Opportunities and potential bias in new transportation data

By Brian Lutenegger A new issue brief from the Center for American Progress examines congestion on roadways in the United States and considers the potential and pitfalls of new data sources, such as those provided by private ride hailing companies including Uber and others. Although cities are

Big data enables new tool for analyzing and diagnosing traffic congestion

By Chris McCahill StreetLight Data, which provides trip-making data from mobile devices and smartphone apps, has just launched a new interactive Congestion Analysis tool. The tool lets subscribers identify congested roads by time of day, break down the traffic in terms of trip length, trip

Tapping into TNC data

By Chris McCahill With the rise of transportation network companies (TNCs) like Uber and Lyft, and growing concerns about their effects on traffic and curb usage, transportation agencies and local governments are eager for data. Data from TNCs, however, are heavily guarded. Many governments are