California Department of Transportation
Jim Appleton, Acting TSI Division Chief Tremain Downey, Chief, Office of Data Analysis & GIS. Click to send a message. Mark Samuelson, Chief, Office of Highway System Information & Performance. Click to send a message. Sarah Chesbro, Chief, Office of Travel Forecasting and Analysis. Click here to send a message.

Mailing Address:

Department of Transportation
Division of TSI, MS #38
P.O. Box 942874
Sacramento, CA 94272-0001

FAX: 654-6583








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Caltrans > Division of TSI: We are the 'Pathway to information!'

Division of TSI LogoDivision of Transportation System Information (TSI)

Our Mission:

TSI strives to provide quality information to our customers in a timely manner to improve mobility decisions.

Our Goals:

  • SATISFIED CUSTOMERS: Adding value to our customers' businesses.
  • TRUSTED PARTNERS: Being accountable to provide timely, quality products and services.
  • EDUCATED WORKFORCE: Optimizing the knowledge and experience of TSI staff.
  • INFORMED DECISIONS: Supporting inforrmed customer decisions by providing information, tools, services, and analysis.

Our Offices:

Office of Data Analysis and GIS (ODAGIS)

Office of Highway System Information and Performance (OHSIP)

Office of Travel Forecasting and Analysis (OTFA)



Updated April 16, 2012