California Air Resources Board Information



The California Air Resources Board (CARB) is the “clean air agency” that protects public health, welfare, and ecological resources through the reduction of air pollutants. CARB is the enforcement body when it comes to diesel-powered medium-duty trucks in California, and one of their primary duties is to define vehicle emissions standards. The state of California has established regulations to meet these standards.


These regulations no longer allow some diesel-powered vehicles to be operated on California roadways. If you own a business and operate older model diesel vehicles, you may need to replace your truck due to these regulations. If your truck is out of compliance, CARB can place a DMV registration hold on your vehicle.