A Kentucky-based company suing New Hampshire over its decision to scrap vehicle emissions testing has asked a federal judge ...

The California Air Resources Board (CARB) has certified only one telematics provider to participate in its Clean Truck Check (CTC) program with just over a quarter of the year left before heavy- and ...

The postcard from the Illinois Air Team said the aging SUV was due for an emissions test. Unlike one’s SAT tests, it passed with flying colors. Following a 44-second wait in line at the three-bay ...