The target of this research is to judge and assess attainable choices for a extra complete HD I/M program that might be carried out in California. For this research, a pilot research with nominally 50 automobiles was performed at an area restore facility. The pilot research included an analysis of pre- and post-repair emissions reductions and the restore prices. A collection of various devices doubtlessly relevant to a HD I/M program have been additionally evaluated, together with mini-PEMS and the Emissions Detecting and Reporting (EDAR) distant sensing machine.
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