On-Road Remote Sensing Test Systems Functional Requirements and Performance Criteria

Section 276 Section 276.507  On-Road Remote Sensing Test Systems Functional Requirements and Performance Criteria a)         The on-road remote sensing test equipment shall consist of the following: 1)         An infrared SDM capable of measuring the concentration of HC, CO, and CO 2 present in an in-use vehicle; 2)         A camera system that automatically photographs vehicle license plates; 3)         A system that links each emission record to the correct vehicle license plate photograph; and 4)         A laser based speed and acceleration measurement system. b)         The Infrared SDM shall be of a design certified to meet the following accuracy requirements: Pollutant Range Accuracy HC ALL ±150 ppm or ±15 percent of expected HC Concentration CO ≤ 3.0 percent ±10 percent or 0.25 percent (Whichever is greater) > 3.0 percent ±15 percent c)         The speed and acceleration measurement system shall be of a design certified to measure vehicle speed to within ±0.5 miles per hour and vehicle acceleration to within ±0.3 miles per hour per second at the moment exhaust is measured.