The state requires emissions inspections every two years on cars that are more than four years old but less than 25 years old.

All gasoline powered vehicles registered in New York State must get an emissions inspection every 12 months.

The stickers were sold for $20 to $30 to people trying to avoid car repairs or whose vehicles could not pass emissions inspections, the authorities said.

In the United States, vehicle safety inspection and emissions inspection are governed by each state individually.

Diesel-powered vehicles and cars 35 years old or older are exempt from emissions inspection.

The state requires emissions inspections every two years on cars made from 1979 to 2001.

Sun is the leader in emissions inspection and engine diagnostic equipment at a time when those industries are expected to show steady growth.

Mr. Moynihan has attached a separate amendment to the clean air legislation that would require emissions inspections for buses and trucks.

The tow truck and air-conditioning repair equipment are already antiques, and the computer for emissions inspections, only three years old, will soon be obsolete, too.

Would require diesel-powered trucks to undergo an annual emissions inspection.