Highway System Information and Performance (OHSIP)

OHSIP Chief, Mandy Chu
Mandy Chu, Office Chief
Email Office Chief,
Mandy Chu
This office collects and analyzes report statistics related to the fiscal status, physical and geometric extent, performance, and designation of the State's roadway systems. This enables decision makers and system users to take advantage of quality transportation information to make performance-based decisions about transportation services and infrastructure.

What We Do

  • Administer public roads functional classification and designation approvals to secure and distribute State and federal funding;
  • Manage naming of State roadways, structures, and appurtenances;
  • Partner with federal and local agencies, managing urban and rural area designations and maintains the official California Road System (CRS) map set;
  • Maintain Condition and performance data in the Federally mandated Highway Performance Monitoring System (HPMS), and officially certifies the annual report on maintained public road mileage for the State of California; and
  • Support performance-based decision making by exercising leadership in implementing Transportation System Performance Measures at the national, state, and regional levels.
  • Maintain the Traffic Accident Surveillance and Analysis System (TASAS) database.

OHSIP Branches


Eric Y. Wong, Chief
Email: eric.y.wong@dot.ca.gov
Phone: (916) 654-6839
Email Branch Staff: HPMS@dot.ca.gov

Key Responsibilities of this branch:

The Highway Performance Monitoring System (HPMS) has been vital to the FHWA since it was begun. The data reported in the system has had a direct impact on funding, planning, performance measurement, and public accessibility to a vast amount of highway related data. The Highway Performance Monitoring System (HPMS) is a federally mandated inventory system and planning tool, designed to assess the nation's highway system. HPMS was created in 1978 as a continuing, sample-based monitoring program that requires annual data reporting instead of biennial special studies. The Highway Performance Monitoring System (HPMS) has been a highly successful federal-state partnership for over 30 years.

National Highway System (NHS)

Functional Classification

Other Applications


Brian Domsic, Chief
Email: brian_domsic@dot.ca.gov

Key Responsibilities of this branch:

Our team maintains accident data in the TSN database for all collisions on or associated with a State highway facility.

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