Historical Traffic Information
Speed Map Archive
Houston TranStar captures images and data from the Houston Traffic Map every 15 minutes, 24 hours per day, 7 days per week. You can view the captured information in the Speed Map Archive.
Yearly Speed Averages
Using data from the Houston TranStar Traffic Monitoring System, average speeds over entire years are calculated. You can also view time elapsed movies of the averages to visualize how traffic speeds change throughout the day. Check it out here.
Historical Travel Times
Using data from the Houston TranStar Traffic Monitoring System, average travel times from common origins and destinations on the Houston freeway system are shown here.