California Department of Transportation

Office of Travel Forecasting and Modeling


The Office of Travel Forecasting and Modeling is a functional unit under the Deputy District Director of Planning and Local Assistance. The primary function of the Office provides critical project travel analysis of past, present and future traffic volumes, turn movements as well as other operational characteristics.

Additionally, this Office performs several technical analysis on this data in order to identify and articulate traffic and roadway efficiencies and deficiencies. These mobility measures are used as the major stepping-stone through Project Approval and the Environmental Documentation, thus bringing the project closer to actual construction.

Please direct any comments or questions to: Susan Zanchi at (530) 741-4199 or susan.zanchi@dot.ca.gov.