Depending on where you live in the United States, emissions testing of old cars may or may not even be a thing. There are 28 ...

Across the United States, the rules for checking tailpipe pollution are quietly shifting, even as climate targets grow more ambitious and electric vehicles grab headlines. States are carving out ...

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The contractor that oversees Wisconsin’s vehicle emission testing program is making changes to address a slide in the number of car repair facilities willing to conduct the tests for them. In 2012, ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. CHICAGO (WGN) — About once every two years, ...