The development and application of qualification requirements for automotive service technicians and mechanics participating in vehicle emissions inspection and maintenance (I/M) programs is vital to the realization of maximum emissions reductions. Using the existing British Columbia (B.C.) trades qualification system for mechanics as a screening mechanism, the provincial I/M mechanic certification requirements take into account not only skill and knowledge related to automotive emissions control, but knowledge regarding the administrative requirements of the program as well. In addition to rigorous mechanic qualification requirements, the centralized B.C. Inspection program will include loaded-mode testing and NOx measurement, as well as thorough visual and functional inspection of emissions control components. Additionally, computer-stored fault codes will be retrieved during the inspection, and transmitted along with applicable technical service bulletins to the mechanics performing repairs, thus providing an unprecedented level of diagnostic information to mechanics.