Across the United States, the rules for checking tailpipe pollution are quietly shifting, even as climate targets grow more ...

A Milwaukee County driver who needed an emissions test to renew his license plates recently asked Public Investigator: Why are these tests still required? Public Investigator asked the Department of ...

Each year, certain vehicles in 13 metro Atlanta counties must pass an emissions test before they can be registered with the state. While the majority pass with no issue, a number of vehicles fail due ...