Knowing that the vehicle driving next to you on the highway is in good operable condition is important. Knowing that it’s also not spewing unsafe levels of noxious pollutants into the air is too—or at ...

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 states where at least some (though not necessarily all) are required to ...

DENVER (KDVR) — Colorado will now have self-service kiosks for emissions testing on gasoline-powered and hybrid vehicles. In a Thursday press release, the Colorado Air Quality Control Commission ...