The Environmental Protection Agency conducted a survey of 7,541 lightduty motor vehicles for tampering with emission control devices. All vehicles inspected were classified into one of four mutually exclusive categories: tampered (at least one control device removed or rendered inoperative), arguably tampered (potential, but not clear-cut tampering), malfunctioning, and okay (all control devices present and apparently operating properly). The results were: tampered-20%, arguably tampered-25%, malfunctioning-1% and ok 54%.
Motor Vehicle Tampering Survey - 1986
1987
85 pages
Report
No indication
English
Motor Vehicle Tampering Survey - 1985
NTIS | 1986
|Motor Vehicle Tampering Survey-1987
NTIS | 1988
Motor Vehicle Tampering Survey - 1983
NTIS | 1984
|Motor Vehicle Tampering Survey (1978)
NTIS | 1978
Motor Vehicle Tampering Survey - 1984
NTIS | 1985
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