Illinois Administrative Code
Title 35 - ENVIRONMENTAL PROTECTION
Part 276 - PROCEDURES TO BE FOLLOWED IN THE PERFORMANCE OF INSPECTIONS OF MOTOR VEHICLE EMISSIONS
Subpart E - TEST EQUIPMENT SPECIFICATIONS
Section 276.507 - On-Road Remote Sensing Test Systems Functional Requirements and Performance Criteria

Universal Citation: 35 IL Admin Code § 276.507

Current through Register Vol. 48, No. 38, September 20, 2024

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 CO2 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	[LESS THAN OR EQUAL TO] 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.

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