Mobile pollution source is one of the main causes that generated air quality deterioration in metropolitan areas, and it is also the control focus strengthened by environmental and traffic authorities. Therein, the black exhaust from the diesel vehicles is highly condemned by the public. In order to make the business of controlling nationwide diesel vehicles more complete and enhance the inspection quality of inspection stations on diesel emissions in Taiwan cities and counties, this project will not only continue to promote diesel vehicle insurance system but also draft a plan to adapt a subsidy mechanism for the using diesel vehicles to be repaired and reinspected. Only vehicles that failed in inspection but passed the re-inspection after being adjusted and repaired by the accredited maintenance factories will be granted with the subsidies. The purpose is to complete the integration of our national maintenance and insurance system for the using diesel vehicles by establishing an excellent maintenance factory certification system and implementing normal vehicle maintenance and repair habits. To continue improving the relevant test quality of nationwide diesel vehicle inspection process, the common problems from relevant tests and re-inspection in recent years were compiled by this project to work out the “self-examination table for exhaust inspection stations to conduct diesel chassis dynamometer tests.” This is to provide the inspectors of inspection stations to check whether or not all instruments and equipment are conformed to specifications while conducting quality tests, capability comparison tests and nationwide relevant tests. Based on the demerit point comparison on relevant test results in 2012 and 2013, the demerit points of this year were mainly found to be less than 1 point, indicating that the relevant tests have gradually improved the professional quality of inspectors and continued to maintain the inspection quality and credibility of inspection stations. In addition, based on the pilot field test results on diesel vehicles that underwent the revised inspection procedure, 84.2% of diesel vehicles are expected to exempt from going through the old inspection procedure and able to reduce 43% inspection time after it is officially implemented in the future. To avoid controversy, the procedure has been updated with the provision that “For vehicles released before 31 December, 2014, if they are failed in this test, they will undergo diesel vehicle exhaust inspection method and procedure as required in the exhaust inspection specifications, excluding horsepower ratio measurement on full load fixed rpm exhaust test method. This test result will be determined as the inspection result.” In view of this, more than 70% of vehicle owners will be expected to be satisfied with the revised inspection procedure.

mobile source control;inspection/maintenance;correlation test