Driving licence is usually issued to a person when he/she is considered capable of driving according to the set standards, and have passed certain tests that prove the claim. However, at some places, this licence is issued on a lifetime basis. This means that the physical deterioration of the senses of the driver with increasing age is completely ignored. Human body usually starts decaying with time and becomes weak, so as a result, a person had to experience diminishing vision, hearing and reaction time.
These senses are usually tested during the driving test but are neglected after that. As a result, elder drivers gets involved in accidents and horrible road incidents. If not, they cause tremendous amount of trouble to other drivers. Imagine a car running fast in a slow speed lane or running dead slow in a high speed lane; such incidents never fail to contribute to the mental stress of other drivers.
In order to cope up with such a problem, driving licences should always be issued with an expiry date. Licence should come with an age limit of no more than 5 years. In addition, people should be regulated to inform the office of any possible injuries occuring during the period, otherwise be charged. Elderly people should be treated the same; out if respect for them, they should not be allowed to serve as a risk for the other lives present around them.
Thus, in my opinion, elderly people should be required to reapply for their driving licence. They should only be re-issued a licence if they are considered fit to drive. Otherwise, they may serve as a threat to themselves as well as the other traffic on the road.