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DRISI is composed of nine offices that work together as a team to provide solutions and knowledge that improve Californias Transportation System. Below are links to each of these offices, a brief description of their function, and a link to their homepage (as they become available) along with their main contact.

Executive Office

  • James (Jim) Appleton, Division Chief
    Email: James Appleton
    Telephone:(916) 654-8877

    • Wendy Hughey, Executive Secretary
      Email: Wendy Hughey
      Telephone:(916) 654-9322

Office of Communication System Research

Oversees Transportation Communications Related Research.
  • Ramez Gerges, Office Chief
    Email: Ramez Gerges
    Telephone:(916) 654-8014

Office of Data Services and Technology (ODST)

ODST is the focal point for all GIS activities in the Department.


Office of Highway System Information and Performance(OHSIP)

OHSIP collects and analyzes report statistics related to the fiscal status, physical and geometric extent, performance, and designation of the State's roadway systems.


Office of Materials and Infrastructure (OMI)


Office of Operations and Resource Management (ORM)


Office of Planning, Policy, and Program Development

OPPPD provides information (analytical, statistical, social, environmental) to the decision-making process to comply with Federal and State laws, regulations, and mandates.


Office of Safety Innovation and Cooperative Research

OSICR provides essential research to find more effective and safe operation of the state highway system.

  • Joe Horton, Office Chief
    Email: Joe Horton
    Telephone: (916) 654-8229

Office of Traffic Operations Research

TOR provides essential research to find more effective and safe operation of the state highway system.


Statewide Alerts and Other Information