摘要: |
Under contract to the Coordinating Research Council (CRC), Eastern Research Group, Inc. (ERG) and its subcontractor, NuStats, conducted a national study to characterize the response of vehicle owners/drivers in non-inspection/maintenance (non-I/M) areas to illuminated Malfunction Indicator Lights (MILs) on their 1996 and newer vehicles - those equipped with federally-mandated onboard diagnostic (OBD) systems. Data on these vehicles and owners/drivers were obtained by a telephone survey using a questionnaire developed specifically for this project. The vehicles of all respondents were registered in counties without an I/M program that included an emissions test. The impetus for the project was to gather and analyze data that could be used to update the non-I/M response to illuminated MILs currently used by Environmental Protection Agency's (EPA) highway vehicle emission factor model, MOBILE6.2. This report documents the findings of this study, including its design and implementation. |