Transportation Secure Data Center: Real-World Data for Planning, Modeling, and Analysis

Research output: NRELFact Sheet


The Transportation Secure Data Center (TSDC) provides free, web-based access to detailed transportation data from a variety of travel surveys conducted across the nation. While preserving the privacy of survey participants, this online repository makes vital transportation data broadly available to users from the comfort of their own desks via a secure online connection. Maintained by the U.S. Department of Energy's National Renewable Energy Laboratory (NREL) in partnership with the U.S. Department of Transportation (DOT), the TSDC houses data from travel surveys and studies conducted using global positioning system (GPS) devices. It features millions of data points - second-by-second GPS readings, vehicle characteristics (if applicable), and demographics - for all modes of travel. 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.
Original languageAmerican English
Number of pages2
StatePublished - 2019

Bibliographical note

Replaces January 2018 version: NREL/FS-5400-70723

NREL Publication Number

  • NREL/FS-5400-73086


  • GPS data
  • transportation data
  • Transportation Secure Data Center
  • travel data
  • travel studies
  • travel surveys
  • TSDC


Dive into the research topics of 'Transportation Secure Data Center: Real-World Data for Planning, Modeling, and Analysis'. Together they form a unique fingerprint.

Cite this