The dynamic visual field (DVF) of two groups of about 220 accident and non-accident drivers (aged 20-30,30-40,40-50, and 50-60 years) were measured. Results showed that (1) the DVF differed significantly between two gruoups whereas the static one is similar, (2) Real visual field can hardly be described only by the static one,(3) there were high correlations between the DVF and the maximum safety driving speed.
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