Most states have titling and registration laws that require residents to title and register their cars in the state—and for new residents of the state to do so within some period of time, such as 30 days. Some states require titled cars to pass a comprehensive safety inspection. And some states also require cars owned by residents of certain counties to pass an emissions test/inspection designed to improve air quality in more densely populated counties.
In Pennsylvania (PA), residents are required to title and register their vehicles with the Pennsylvania Department of Transportation (PennDOT). New residents must title and register their vehicles within 20 days of establishing residency in the state. Pennsylvania also mandates that vehicles undergo a safety inspection annually, which includes checks on various vehicle components such as brakes, lights, tires, and other critical parts to ensure they meet safety standards. Additionally, Pennsylvania requires emissions testing for vehicles registered in certain counties. This emissions program, known as the 'Drive Clean Pennsylvania' program, aims to reduce air pollution and is required annually for gasoline-powered cars, trucks, and SUVs that are 1975 model year or newer and are registered in designated counties with higher populations and traffic density. The specific requirements for safety and emissions inspections can vary based on the vehicle type, age, and the county in which the vehicle is registered.