Forcing older drivers to do mandatory cognitive tests slashes the rate of vehicle collisions among older adults by one in ten, a study suggests.
Researchers in Japan studied the impact of a pensioners rule imposed in 2017 that required all people over 75 years old to do a cognitive test every five years in order to keep their license.
Within two years, the country saw a drop in car accidents among older adults by almost 4,000. But at the same time, injuries among over-75s on bicycles and sidewalks rose.