Certification and Compliance for Vehicles and Engines
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Onroad
This section includes information on motorcycles, passenger cars and trucks, commercial trucks and buses.
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Nonroad
This section includes aircraft, heavy equipment, locomotives, marine vessels, recreation vehicles and small equipment and tools.
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EV-CIS
This section is for the Engines and Vehicles Compliance Information System (formerly Verify) for onroad and nonroad vehicles and engines.
Manufacturer Information and Guidance Letters
Learn more about manufacturer information and guidance letters, including how to find them by year issued and how to get notified when new letters are issued.
Search for Documents
database for documents:
- Advisory circulars
- Applications for certification
- Certificates of conformity
- Certificate summary information reports
- Manufacturer guidance letters
- EV-CIS (formerly Verify) documentation