I know people vary a lot, but I imagine ability to judge speed and distance are somewhat impaired when you're 83.
There has been much
SCIENCE on the subject. The bottom line is that under-10s are cognitively incapable of judging an objects' speed by looming
[1], young adults are surprisingly good at it
[2], and the ability declines with old age. That's before you factor in the usual age-related deterioration of vision and reaction times.
I suspect older people tend to make up for this with experience-based strategies. eg. They know how far it is to that bend in the road, and assume the car is travelling at the speed limit. Which works well until it doesn't.
TBH I don't think I'm very good at estimating vehicle speeds at all. When crossing faster roads I'll sometimes resort to counting the seconds it takes for a car to get from me to a given point in order to work out what constitutes a sufficient gap, because I have so little faith in my intuition.
[1] The apparent size of an object increasing as it becomes closer, which is the primary mechanism for estimating speed on a straight road.
[2] Although we tend to underestimate the speed of larger objects, eg. planes.