The purpose of the Code is to provide guidance to provincial transportation and environmental regulatory agencies regarding light-duty vehicle (LDV) inspection and maintenance (I/M) programs as a means of reducing excess exhaust and evaporative (evap) emissions of volatile organic compounds (VOCs), oxides of nitrogen (NOx), carbon monoxide (CO), and particulate matter (PM) from in-use LVDs in large urban centres. The Code is intended to provide a basis for implementing consistent and uniform control measures, employing the latest technology, for the testing of in-use LDVs across Canada. Agencies wishing to operate LDV I/M programs will realize a number of benefits by following the recommendations in the Code. In addition to providing reductions of local emissions, implementation of an I/M program will add a number of new jobs to the local community. By following the Code's recommendations, the quality of vehicle inspections, as well as the overall operating performance of I/M inspection stations, will be improved.
National Working Group on Light-Duty Vehicle Emissions. 1997. Environmental Code of Practice for Light-Duty Motor Vehicle Emission Inspection and Maintenance Programs. Canadian Council of Ministers of the Environment