Yes, apparently quite common as we age. Someone once told me the amount of light entering your eyes is half at age 60 of what it was at age 20.
Early onset of cataracts can also cause this.
Perhaps, but other factors such as confidence play a decent part too.
My mum (78) has voluntarily given up driving as I think she has got far more nervous driving generally as she's got older - for the previous15+ years she stopped driving on motorways/dual carraigeways for similar reasons, often taking longer routes on 'ordinary' roads for certain trips or just leaving the driving to my dad.
Now even my dad (same age) does not like driving in the evenings and avoids the rush hours to avoid the stress (as he see it) of driving at those times. He certainly will not drive on snow now, even locally. It also means that for going to see relatives, unless they can stay overnight or someone else can take them there/back, they won't make the trip any more. They often now meet up with friends/relatives 'half way' for a pub lunch instead, knowing they can get home before the rush hour/dark.
They often also get the bus or local trains (which are free or discounted) for quite a few trips now (e.g. to hospital appointments), even though they would take quite a bit longer than driving, though only in the day time - I suspect that some more elderly peopl don't like going out on their own at night per se, except where they are being taken by family members (safety and the chaufeur duties).
Both of them have reasonable eyesight and health for their age, though do tire far more easily, so longer journeys (say over 2 hrs) are normally avoided. At most the drive in the summer to the south coast for a once a year cruise ship holiday.
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