Q-2, r. 33 - Regulation respecting environmental standards for heavy vehicles

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13. The opacity of emissions from diesel-powered heavy vehicles is measured
(1)  by the roadside, using one of the following opacimeters:
— Red Mountain Engineering’s Smoke Check 1667;
— Thermal-Lube’s EXL Diesel Emission Detector; or
— Thermal-Lube’s EXL Combo Opacimeter 5-Gas Analyzer;
(2)  in an accredited establishment, using an opacimeter, in accordance with the Society of Automotive Engineers recommended practice J1667 Snap-Acceleration Smoke Test Procedure for Heavy-Duty Diesel Powered Vehicles.
O.C. 1244-2005, s. 13; O.C. 158-2011, s. 6.