With 7 of its ambitious rules for cars, trucks and trains repealed, California officials must find new ways to clean up the ...

Light-duty vehicles—saloon cars, SUVs and minibuses—exported from the US, Europe and Japan to Uganda are of poor quality and ...

Public Investigator asked the Department of Transportation why tests are still required, and what options exist for people ...

Electric cars are increasingly common due to their potential environmental benefits, but a new study suggests that high ...

A Pollution Under Control (PUC) certificate, recognised as a legal indicator of emissions compliance, should carry weight in ...

Air quality has improved or remained steady across New York City since congestion pricing launched, city health department ...