Should all vehicles have a Crit'Air sticker? We tell you the rules to know on the Crit'Air sticker (air quality certificate). Know where to find out about the measures taken in case of an episode ...

It’s a simple system. If you are entering one of the restricted zones you need to buy a sticker, which will be a specific colour depending on the emissions level of your vehicle. Crit’Air 0/E: ...