United States Department of Transportation
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Vision and Commercial Motor Vehicle Driver Safety: Volume 2 - Appendix G
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2007-12-14
[PDF-6.53 MB]
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NTL Classification:NTL-SAFETY AND SECURITY-Human Factors;NTL-FREIGHT-Trucking Industry;NTL-FREIGHT-FREIGHT;
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Abstract:The purpose of this evidence report is to address several key questions posed by the Federal Motor Carrier Safety Administration (FMCSA) that pertain to vision and commercial motor vehicle (CMV) driver safety. Each of these key questions was developed by the FMCSA in such a way that the answers will be useful in updating its current medical examination guidelines. The five key questions addressed in this evidence report are as follows: Key Question 1: Is monocular vision associated with an increased crash risk? Key Question 2: Do red-green color deficiencies (either protan or deutan) increase crash risk? Key Question 3: Is visual field (VF) loss associated with an increase in crash risk? And, if affirmative, what is the acceptable VF range in the horizontal and vertical meridians? Key Question 4: Do cataracts increase crash risk? And, if affirmative, does cataract surgery reduce this risk? Key Question 5: Is diplopia associated with increased crash risk?
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