The California Air Resources Board is reminding owners of heavier diesel trucks and buses that new emission reducing regulations go into effect Jan. 1, 2012, and many businesses...
The California Air Resources Board held a webinar to discuss draft concepts for California’s future heavy duty vehicle inspection and maintenance program.
Worried about the high cost of modifying diesel engines to comply with a state regulation intended to reduce emissions, some California truckers say a recent year-long extension...
