Well, drivers over 75 probably drive very few miles in a year. So, 55 year olds, the young uns of TV, may very well be the safest drivers since they are physically and mentally the healthiest, statistically speaking.
Yes statistically younger people are heathier, better vision etc, and miles per year driven has an effect. But the fact is, drivers over 75 are involved in a very small percentage of accidents which is dwarfed by the cohort aged 20 to 54. According to the link I posted 5-6% of accidents caused by over 75, 50-60% caused by 20 to 54. In fact the age group 55 to 64 is 8 to 11% of accidents vs 5-6% over 75.
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