It's interesting how the emissions testing component varies so much state to state and even within each state. It also blows the way of the current political climate. Currently in Ohio, their is no emission testing at all except for 3 counties of the 88 in Ohio, centered around Cleveland. At one time, we had mandatory emission testing in 18 of the 88 counties around most of the larger metro areas. Residents of those counties carried the cost of those tests for all Ohio residents. Ohio had a rolling 25 year old testing window. Meaning each year, the previous 25 year old vehicles became exempt. This made little sense since OBDII emissions systems became law in 1996. It's important to try and keep tabs on the requirements for our old collector cars and fight unreasonable standards these cars were never designed to meet. The overall mileage driven is so low, and the number of cars so small, the effect of these cars driving around can't possibly have any measurable effect on air quality.
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