Vehicle emission standard

Vehicle emission standards are rules set by governments that regulate how much pollution cars, trucks, and other vehicles can put into the air. Pollution from vehicles can cause harm to the environment and make people sick, so these standards are important to protect our health and the health of the planet. The standards vary by country, so a car that has been certified by one government as meeting the standards may not be allowed in another country. To meet the standards, car makers use technologies such as catalytic converters that help to clean up the pollution coming out of the tailpipes of their cars.