Highway Motorcycle Emissions Certification Requirements
This page provides a list of emission-related regulations, test procedures, Manufacturers Advisory Correspondences (MACs), and related documents applicable to highway motorcycles (HMC), also known as on-road or "street" motorcycles, and is primarily for the interest and needs of manufacturers and others that are required to obtain certification from CARB. For more public oriented materials, please visit our On- and Off-Road Motorcycle Certification Enforcement Program web page.
See ONMC – Meetings & Workshops for information associated with the latest On-Highway Motorcycles (ONMC) public outreach events, either completed or forth-coming.
Please sign up to the Mobile Source Mailouts and MAC email subscription list. By doing this, you will be notified when a new Mobile Source Mailout (e.g., proposing a new rule or amending an existing rule) or MAC (e.g., providing CARB's policy decisions and interpretations of the regulations and test procedures) has been posted to the Mobile Source Mailouts or MAC web pages. These email notices can replace any of the mobile source hard copy mailing lists on which you may already be.
|Regulations and Test Procedures, Exhaust.
The California exhaust emissions regulations for HMC are in Title 13, California Code of Regulations, Section 1958 (T13 CCR § 1958).
|Regulations and Test Procedures, Evaporative.
California evaporative emissions regulations are in T13 CCR § 1976.
|California Emissions Warranty.
|The California motorcycle emissions warranty requirements are in T13 CCR § 2035, et seq.
The California Vehicle Emission Control Information (VECI) labeling requirements are in T13 CCR § 1965.
|Fuel Fill Pipe Requirements.
|The fuel fill pipe specifications are in T13 CCR § 2235.
|Manufacturers Advisory Correspondences (MACs).
|The following are selected MACs addressing highway motorcycle certification. For a fuller list of Mobile Source MACs click the link to the left.
|Mailouts And Correspondences
The following are selected mail-outs and other CARB correspondences addressing highway motorcycle certification. For a fuller list of Mobile Source mail-outs click the link to the left.
|Recommended Application Format.
|Frequently Asked Questions.
|CARB Certification Administrative Requirements.
New vehicle manufacturers are required to register with CARB as a manufacturer to gain access to the document submitting system CARB-eFILE and Electronic Certification System (E-Cert). See these web pages.
In 2019 CARB conducted a public workshop to discuss the proposed adoption of a schedule of fees for mobile source certification and compliance.
|Search the CCR.
|Search the California Code Of Regulations, Titles & Sections
For more information regarding these regulations and test procedures, please email the On‑Road Light-Duty Certification Section.