Interesting that they are discussing 65 year old motorists and then make these statements:
"Older drivers who are healthy aren't necessarily any less safe than younger drivers. But many older drivers are likely to have age-related medical conditions that can affect their driving.
A 40-year-old needs 20 times more light to see at night to see than a 20-year-old, Coughlin said. Older drivers generally are less able to judge speed and distances, their reflexes are slower, they may be more easily confused and they're less flexible, which affects their ability to turn so that they can look to the side or behind them."
I wonder if they have considered the judgment of a 40 year old experienced motorist vice that of a 20 year old, the latter who may have been driving for only 2 years.
On the other hand, those motorists that have been on the road for a number of years may not be aware of laws that have changed or been enacted since they last read a motorists handbook. Many states for instance enacted laws pertaining to cyclists in the '70s, where as a 65 year old motorist may have first started to drive in the early '60s.
I recall discussing with my father the fact that it was legal for me to bike on the streets in all 50 states... he had no idea that cyclists had such rights, and thought that motorists were merely doing cyclists a favor by permitting them on the road.