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State Agencies
OBD offers significant benefits to state and local agencies working to improve air quality through vehicle inspection and maintenance programs. By providing technicians with timely and accurate emissions data and helping vehicle owners better maintain their vehicles, OBD plays a key role in helping states meet national air quality standards.
Whether your state has already implemented OBD checks or is planning to do so in the near future, this Web site will provide you with a wealth of information, including:
- Status of State and Local OBD Programs
Learn the status of state and local efforts to incorporate OBD technology into vehicle inspection and maintenance programs. - Outreach Kit
Take advantage of a suite of materials developed by EPA to help raise awareness about OBD in your state or locality. - EPA Final Implementation Guidance Document: Performing Onboard Diagnostic System Checks as Part of a Vehicle Inspection and Maintenance Program (PDF) (37 pp, 320K, EPA420-R-01-015, June 2001, About PDF Files)
Review EPA's official guidance on performing OBD checks as part of your state's vehicle inspection and maintenance program. - Regulatory and Technical Resources
Access regulatory and technical documents regarding EPA's Inspection and Maintenance program.
Related Links: 
Equipment and Tool Institute
Learn more about Controlled Area Network (CAN) equipped vehicles.
OBD Clearinghouse: Weber State University's Center for Automotive Science and Technology
Learn the latest on state and local OBD implementation, technician training opportunities, state outreach materials, and more!
OBDII Research Center, Colorado State University
Explore this central source of OBD information and join a forum for I/M administrators where you can raise and discuss important OBD-related issues.