These "Clean Air Vehicle" stickers allow clean cars with just one occupant into the High Occupancy Vehicle (HOV) lanes in California and can save some commuters up to two hours a day. Wow.

Paris has the strictest rules under the Crit'Air scheme UK travellers driving to France are being warned they need to display a clean air ... the stickers identify a vehicle's air pollutant ...

Drivers of cars with a Clean Air Vehicle decal issued by the state have enjoyed the privilege of using an HOV lane without the required number of passengers since 2005 thanks to a federal ...

According to the Department of Motor Vehicles, which administers the clean-air decal program, a total of 411,133 vehicles ...

The Supreme Court has underscored the importance of implementing hologram-based colour-coded stickers for vehicles to combat air pollution, signaling its intent to make the scheme ...