Pennsylvania requires two yearly inspections for motor vehicles. In addition to a federal safety inspection, Pennsylvania has an emissions inspection for gasoline vehicles in certain counties. The state seeks to protect the environment by reducing harmful vehicle emissions. However, it offers a waiver in certain circumstances when a car does not pass inspection.
Find an approved Pennsylvania Department of Transportation (PennDOT) emissions inspection station. PennDOT certifies inspection stations throughout the state. You must pick a certified station to get an emissions sticker or qualify for an emissions waiver.