Currently, AQR teams use the following test procedure. Using the random sample method, a CHP officer selects vehicles and directs them into the test lane as soon as the test of the previous vehicle is complete. The greeter explains to the driver that the test is part of a survey to evaluate the Smog Check Program and that there are no penalties, emissions-related or otherwise, associated with the test. The BAR greeter also provides the driver with a consumer information handout (Appendix D) that further explains the Roadside Inspection Program. If the driver agrees to participate in the inspection process, the vehicle is inspected. If the driver refuses, the vehicle is released and another vehicle is quickly directed into the test lane. The license plate numbers of vehicles whose operators decline to participate in the Roadside Inspection Program are recorded and entered into a laptop computer for later analysis.
A similar process exists if the team is using the stratified sample method. However, once the vehicle enters the test lane and stops at the appropriate location, the BAR greeter determines the vehicle model-year. Using a worksheet providing model-year stratification, the greeter determines the model-year of the vehicle. If the vehicle is one of the desired models, the driver is asked to participate in the Roadside Inspection Program. If it is not, the driver is thanked for their time and the vehicle is directed out of the lane. Note that every driver has the option not to participate. All testable vehicles receive a 90-second ASM 5015 and a 60-second ASM 2525 test.

The license plate numbers of vehicles whose operators decline to participate in the Roadside Inspection Program are recorded and entered into a laptop computer for later analysis.