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.

Primary Subject Matter	Description
Overview	A presentation summarizing the process by which motorcycle manufacturers can certify their vehicles in California. Printer friendly version.
Definitions	"Motorcycle" is defined in California Health and Safety Code, § 39041, Also in California Vehicle Code, § 400.
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). T13 CCR § 1958 references the U.S. Environmental Protection Agency's (U.S. EPA's) test procedures in Title 40, Code of Federal Regulations, Part 86, Subparts E and F. These procedures are available from the U.S. EPA's Regulations for Emissions from Motorcycles (Light-duty) web page.
Regulations and Test Procedures, Evaporative.	California evaporative emissions regulations are in T13 CCR § 1976. The test procedures are in the CA Evaporative Stds. and Test Proc, for 2001 – 2025 PC, LDT, MDV, & HDV and 2001+ MC.
California Emissions Warranty.	The California motorcycle emissions warranty requirements are in T13 CCR § 2035, et seq. T13 CCR § 2035, Purpose, Applicability, and Definitions. T13 CCR § 2036, Defects Warranty Requirements. T13 CCR § 2039, Emissions Control System Warranty Statement. T13 CCR § 2040, Vehicle Owner Obligations. T13 CCR § 2041, Mediation; Finding of Warrantable Condition. Emission Warranty Parts List
Emissions Labeling.	The California Vehicle Emission Control Information (VECI) labeling requirements are in T13 CCR § 1965. The VECI label specifications are in 40 CFR, § 86.413-78, incorporated by reference in T13 CCR § 1965. The VECI label shall identify the evaporative emission family. Ref. CA Evaporative Test Procedures, Part II, Section B.1.1.(viii).
Fuel Fill Pipe Requirements.	The fuel fill pipe specifications are in T13 CCR § 2235. Specifications for Fill Pipes and Openings of 1977 Through 2014 Motor Vehicle Fuel Tanks. Specifications for Fill Pipes and Openings of 2015 and Subsequent Motor Vehicle Fuel Tanks. Fuel Fill Pipe Application. Executive Order G-70-16-E.
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. MAC 86-06, Assigned Evaporative Deterioration Factor. MAC 82-03, Evaporative Deterioration Factor Determination. MAC 81-005, Motorcycle Certification Procedures. MAC 81-002, Evaporative Component Bench Aging Procedures. MAC 80-1, Alternate Diurnal Temperature Profile. MAC 77-8, Motorcycle Line And Model.
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. Letter CMC-2016-064, Screening Test For Highway Motorcycles And Off-Highway Recreational Vehicles. ECARS 15-7, Streamlined Certification Process For Carryover And Partial Carryover Certification Applications. MSO 2008-02, California Certification Procedures for Highway Motorcycle Engines. MSO 2008-01, Compliance Assistance and Certification Workshop for Highway Motorcycles, Off-Highway Recreational Vehicles, and Small Off-Road Engines and Equipment. Presentation. Presentation, Printer Friendly Version. MSO 2007-03, Requirement to Report Carbon Dioxide Emissions from 2008 and Subsequent Model Year California Certified Vehicles and Engines.
Recommended Application Format.	Recommended Application Format for Certification of Highway Motorcycles.
Frequently Asked Questions.	Confirmatory Testing by CARB, Highway Motorcycles and Off-Highway Recreational Vehicles. Pre Delivery Checklist for CARB Confirmatory Test Vehicle - Highway Motorcycles, Off-Highway Recreational Vehicles.
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. CARB-eFILE Web Page How To Use CARB-eFILE E-Cert Database Web Page Procedure to Obtain / Modify a CARB-eFILE and E-Cert User ID Account In 2019 CARB conducted a public workshop to discuss the proposed adoption of a schedule of fees for mobile source certification and compliance. Mobile Source Certification and Compliance Fee Regulation Meetings & Workshops Web Page. Workshop Presentation.
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.

California Air Resources Board

Highway Motorcycle Emissions Certification Requirements

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