The study describes the influence of periodic motor vehicle inspection on the mechanical condition of selected populations of motor vehicles. Data were collected by Highway Safety Research Institute observers at the municipally operated safety inspection lanes in Washington, D. C., and Cincinnati, Ohio, where vehicle inspections are required annually and biannually, respectively. Data were also collected at a vehicle inspection lane specifically set up for this purpose in Ann Arbor, Michigan, a jurisdiction in which inspections are not required. Additional data were obtained from the city-operated vehicle inspection lanes in Memphis, Tennessee, where inspection is required triannually. The findings indicate that vehicle populations subject to periodic inspection are in substantially better mechanical condition than populations not subject to inspection. It was found that the mechanical condition of a vehicle population is substantially improved as the frequency of inspections increases, and that the number of defects per rejected vehicle decreases as the frequency of inspection increases. (Author)
The Influence of Periodic Motor Vehicle Inspection on Mechanical Condition
1968
71 pages
Report
No indication
English
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