A group of Wisconsin lawmakers are asking their federal counterparts to reverse part of the Clean Air Act that allows for ...

Wisconsin lawmakers are calling for the removal of vehicle emissions testing, arguing that the Clean Air Act's rules are ...

New Hampshire's plan to end vehicle emissions testing faces a threatened lawsuit, citing potential violations of federal environmental laws.

Smog checks play a crucial role in reducing air pollution from vehicles, yet not all vehicles are required to undergo these ...

New rules around NOx, the most deadly form of vehicle pollution, come into force today, as testing reveals which popular ...

If you're due to get your vehicle tested for pollutant emissions, the process is now a bit easier in the Milwaukee area: the state's Department of Transportation just installed two self-service kiosks ...

An organization that works on auto emissions tests says it plans to sue New Hampshire over the state's plan to end mandatory vehicle inspections.