Travel Analysis Branch
Frequently Asked Questions

Statewide Household Travel Survey

What is the Statewide Household Travel Survey?The California Department of Transportation Travel Analysis Branch conducts a statewide household travel survey. The 2000-2001 California Statewide Travel Survey covered over 17,000 households and 300 household GPS travel surveys.

What is the purpose of the Statewide Household Travel Survey? The branch maintains multimodal travel related information for model estimation, transportation planning, project development, air quality analysis, and a variety of other Caltrans programs.

Who uses the Statewide Household Travel Survey?The Statewide Travel Model is used by many Caltrans divisions, districts, and programs. It is also used by many entities outside of the state..

GPS-ATD

What is GPS-ATD?The GPS-Automated Travel Diary (GPS-ATD) is a satellite enabled surveying tool that will improve the performance of the household travel survey.

Who Uses the GPS-Automated Travel Diary?Transportation Planners, Modelers, TSI staff, Caltrans Districts, DOTP, Division of Mass Transportation, Division of Aeronautics, Division of Rail, BT&H, ARB, CHP, Legislators, MPOs, regional and local agencies

Travel Information Integration & Technical Assistance

What do we provide with Travel Information Integration and Technical Assistance?We provide technical support for the Census Transportation Planning Package (a dissemintation of Census transportation products) and for the California Department of Motor Vehicles (DMV) License Survey. We process district service requests for DMV vehicle registration information and we provide technical and analytical support for the vehicle license plate survey. As with all studies and reports, questions come up about how the data was collected and reported. We provide information about the origin of the reports and possible ways to use the information while keeping the customers' needs in mind.