The Transportation Secure Data Center (TSDC) provides free access to detailed transportation data from a variety of travel surveys and studies conducted across the nation.
Data include global positioning system (GPS) readings for millions of miles of travel, along with vehicle characteristics and survey participant demographics. NREL screens the initial data for quality control, translates each data set into a consistent format, and interprets the data for spatial analysis. NREL's processing routines add information on vehicle fuel economy and road grades and join data points to the road network.
The TSDC turned 10 in 2020! Learn about its dramatic growth and future enhancements.
Cleansed Data by All Criteria
To browse data from transportation studies and surveys by name, agency, date, and other criteria, use our searchable and sortable data table.
Spatial DataLearn How
All Data by State and Region
Use the map to view available data from transportation studies and surveys by state. These data support applications that require detailed travel distance and/or speed information, but not detailed latitude and longitude spatial data.