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. Learn more about the TSDC.
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 Data
To access latitude and longitude spatial data from transportation studies and surveys, you'll need to submit an application.
Learn HowAll 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.
Survey Results
Note: Studies from the Metropolitan Travel Survey Archive are currently being processed and will be added to the TSDC site soon.