GPS

Computers are making roadside data collection quicker, easier, and more accurate

By Chris McCahill Researchers recently developed ways of combining the vast information available from Google Street View with custom AI programs to generate highly accurate inventories of street signs. The effort focused specifically on stop and yield signs, but these kinds of algorithms could

New SSTI Resource: Understanding Trip-Making with Big Data

By Chris McCahill SSTI has released a new resource for decision-makers interested in using big data to understand travel patterns, but who are not sure how to get started. This new brief provides an overview of trip-making data from cellphones, mobile apps, and in-vehicle GPS devices. It shows

SSTI releases Connecting Sacramento: A trip-making and accessibility study

By Chris McCahill For several years, SSTI has worked to advance best practices in the use of two emerging technologies: accessibility metrics and trip-making data from mobile devices. Our recently completed study, Connecting Sacramento, was an essential part of that effort. This study brings

GPS data informs transportation projects in Northern Virginia: SSTI study

By Chris McCahill Transportation agencies, dependent for decades on traffic counts and travel demand models, are turning to new sources of data to understand the movement of vehicles and people. These include aerial photography, Bluetooth sensors, and cellular location data. Adding to that list,

Trip-making data, TDM, and connectivity in Northern Virginia (SSTI and Michael Baker International, 2016)

Commercially available GPS data offers valuable new insight about trip origins, destinations, and routes, including short trips that travel demand models often cannot capture. Using this data, SSTI worked with Michael Baker International, the Virginia DOT, and local stakeholders to identify