United States Department of Transportation
i
Examining the FMCSA Vision Standard for Commercial Motor Vehicle (CMV) Drivers: Peer Review Report Summary
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2019-07-01
[PDF-188.93 KB]
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Alternative Title:Peer Review Report: Examining the FMCSA Vision Standard for CMV Drivers
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Edition:Peer Review Report Summary
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Abstract:This study addressed several questions related to the visual requirements for commercial motor vehicle (CMV) drivers, including: Is monocular vision associated with an increased crash risk? Do red-green color deficiencies increase crash risk? Is visual field loss associated with an increase in crash risk? Is visual acuity worse than 20/40 associated with an increase in collision rate? What other visual performance measures related to driving should be evaluated, if any? To address these questions, the research team reviewed road safety records for more than 100,000 CMV drivers, as well as data (from a third-party dataset containing U.S. Department of Transportation (DOT) medical examination records) on drivers’ vision-related conditions and impairments. A cohort study design was used, given that the dataset contained pre-existing measurements of potential risk factors from DOT medical examination records. These data were merged with crash records in the Motor Carrier Management Information System (MCMIS). Only those collisions occurring subsequent to the DOT medical examination were used in the analysis.
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