SAFE Vehicles Comments Cover Letter October 26, 2018 Categories Topics Zero-Emission Transportation Type Research Download the cover letter for comments of the California Air Resources Board on the Safer Affordable Fuel-Efficient (SAFE) Vehicles Rule for Model Years 2021-2026 Passenger Cars and Light Trucks. Related Resources Testimonials States that have Adopted California's Vehicle Regulations New Vehicle Eligibility List for Purchase Incentive Programs