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In-Use Measures: Inspection & Maintenance

Visit EPA's Inspection and Maintenance Web page for a comprehensive overview of the topic, including:

Regulations
Policy Guidance
On-board Diagnostics
Technical Guidance & Test Procedures
Tampering and Warranty
State Status
Federal Facilities
Evaporative Emissions
Remote Sensing
Program Evaluations
Clean Fuel Fleets

This page is maintained by EPA's Office of Transportation and Air Quality (OTAQ).
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