Drive by the testing vans on several occasions. Since there are several variables that may contribute to an invalid reading, and because your vehicle must record two clean readings to pass RapidScreen, it’s a good idea to drive by the testing vans several times in the months prior to your registration renewal.

Air Care Colorado

Collector Plate Regulations 

 There are several "collector's item" categories depending the age of the vehicle. The requirements are as follows:

  • Vehicles model years 1975-and-older can be registered as "collector's items" with no emissions inspection requirement  or mileage restriction. However, if the vehicle is not specifically registered as a "collector's item," an emissions inspection is required every year. 
  • Vehicles model year 1976 to 1984 that have been registered as a "collector's item" prior to Sept. 1, 2009, and the registration has never lapsed or expired, do not require an emissions inspection and there is no mileage restriction. If the vehicle has not previously been registered as a "collector's item," an emissions inspection is required every year.
  • Vehicles at least 32 years old are eligible for "collector's item" registration. However, in order to register as a "collector's item," these vehicles will require an initial emissions inspection and then must be inpsected every five years thereafter at the time of registration renewal. These vehicle have a mileage restriction limiting driving to no more than 4,500 miles per year. If the vehicle is being registered in a county that does not require an emissions inspection, only the mileage restriction applies.

Questions?  
Contact the Colorado Department of Revenue Emissions Program at 303-205-5603.