The 1990 federal Clean Air Act Amendments require vehicle emissions testing for ozone and carbon monoxide non-attainment areas ranked moderate and above. These metropolitan areas need emission testing to help them meet the National Ambient Air Quality Standards. This means they meet the national ozone standard. However, these counties are required to maintain air quality for the next ten years as part of the re-designation agreement. While we have made significant achievements in improving air quality over the last 20 years, air pollution from automobiles remains a challenge.
Automobiles are a major contributor to ground-level ozone, also known as smog.
This percentage can be reduced when vehicles are made to run efficiently and when all pollution control equipment is functioning properly. The Ohio E-Check vehicle inspection program is designed to identify those vehicles in need of emission repair so that they can be made to run cleaner and more efficiently.