Make sure your rear license plate is clean and readable. In order to recognize your vehicle, RapidScreen’s testing equipment must be able to read your license plate. Dirty or damaged plates, trailer hitches, bike racks and other obstructions can make your plate unreadable to our camera—resulting in an invalid reading.

Air Care Colorado

Diesel Test Centers

Diesel vehicles are not tested at Air Care Colorado test centers. For information on emissions testing requirements for diesel vehicles, visit the Air Pollution Control Division's Diesel Emissions Control page, or call them at 303-744-2442 and press 3.

Below is a listing/map of independent Diesel Test centers. Select a center for more information.

dieselLight2.pngServices light diesel    dieselHeavy2.pngServices heavy diesel    dieselBoth2.pngServices both light and heavy diesel