What cars can use the carpool lane with one passenger?
California law allows single-occupant use of High Occupancy Vehicle (HOVs) lanes by qualifying clean alternative fuel vehicles. Use of these lanes with only one occupant requires a Clean Air Vehicle Sticker issued by the California Department of Motor Vehicles. Only white Clean Air Vehicle stickers are still being issued, and they are available for zero emission vehicles (100% battery electric or hydrogen fuel cells) and CNG vehicles. Hybrid vehicles are no longer eligible for HOV lane stickers, and hybrids with existing (yellow) stickers will expire on December 31, 2010.