Emission standard

When cars run, they produce gas that comes out from their tailpipes. This gas is called emissions. Sometimes, these emissions can be very harmful to the environment and the air we breathe.

To make sure that cars are not making too much harmful emissions, governments set standards called emission standards. Think of emission standards like a set of rules that cars have to follow to be able to drive on the roads.

Basically, emission standards require that cars have certain equipment and technology that help to reduce the amount of harmful emissions they produce. This equipment can include things like special filters and catalytic converters.

There are different levels of emission standards, and they differ from country to country. Some countries have very strict emission standards, while others have more relaxed ones. The idea is to make cars cleaner and better for the environment.

If a car doesn't meet emission standards, it cannot be sold or driven on the roads until it's fixed. This helps to keep the air we breathe clean and healthy.