Drug usage found in this group of injured drivers was disturbingly high. The introduction of further initiatives to decrease the prevalence of drug use in motor vehicle drivers is required.
The functional attributes of vision currently assessed for licensing do not adequately explain unsafe driving performance. Differences were observed across vision requirements for the selected jurisdictions, possibly reflecting the equivocal and inconclusive findings linking specific visual functions and impairment with crash risk. Setting benchmarks or performance thresholds on selected visual tests may be problematic for older drivers in particular, who are most vulnerable to underperforming. Driving involves a complex set of skills, and it is proposed that decisions about vision for safe driving need to be considered in the context of the driver's overall health and other functional abilities.
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