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Why California is inspecting heavy-duty vehicles

 

Only two percent of California’s vehicles are heavy-duty vehicles, but they produce about 30 percent of nitrogen oxides (a key smog forming compound) and about 65 percent of soot emissions from  motor vehicles. Smog and airborne soot san cause or aggravate many kinds of respiratory problems.

Heavy-duty vehicles owners can do their part to improve air quality by preventing excessive emissions from their equipment. Proper vehicle maintenance reduces emissions and saves money! The roadside inspections ensure that all vehicles operating in California meet reasonable standards of maintenance and help protect the air we all breathe.

Heavy Duty Vehicle Inspection Video Presentations:

  • Heavy-Duty Inspection Program Video (WMV 110 MB)

  • Heavy Duty Inspection at Ports of Entry Video, 2006 (WMV 9.8 MB)

     

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