Clean Air Vehicle stickers:  The green and white Clean Air Vehicle stickers that were valid in the high-occupancy vehicle (HOV) lanes are no longer valid this year. Vehicles issued a green or white decal between Jan. 1, 2017, and March 1, 2018, may apply for a new red decal that allows use of the HOV lanes until Jan. 1, 2022. The DMV should already have notified owners of vehicles that had a green or white decal and are eligible for the new red decal. Vehicles with white or green decals issued before 2017 are no longer eligible to participate in this program.