Mum makes plea on Inside Out for elderly drivers to re-take test (From Basingstoke Gazette)

Re-testing should be compulsory for all drivers, every 5 years or so. Bad habits creep in and eyesight and judgement deteriorate, and not only in the over 80's.

Retesting should be compulsory for all elderly drivers... having seen elderly drivers on the wrong side of the road on two separate occasions myself,...

Although certainly don't agree all drivers should as 'theKman' says,.

bad habits is one thing,.. not having the slightest clue that your on the wrong side of the road is another,...

All new cars should be fitted with black boxes to monitor driving behaviour. These are already used by some younger drivers to reduce their insurance premiums and should be phased in for all cars.
I don't think these boxes can yet detect if someone drives on the wrong side of the road but they will tell if the driver makes excessive use of the accelerator or brake, corners too fast or even drives too slow.
Other technology coming along will help avoid accidents by automatically taking control of the brakes and steering when there is danger of a accident. And other technology recognises road signs and will help prevent drivers from using the wrong side of the road.
But even with all these new safety devices cars will remain potential lethal weapons in the wrong hands and regular testing of all drivers, say every 10 years for younger drivers and then reducing intervals as we get older, should be introduced.

During the summer I had to use the M25 a lot, to my amazement the worst drivers were in the 40 to 55'ish age range, very poor lane dissapline aggressive and unaware of others on the road and at 51 I am not biased against, I do feel however that some people can pass a test but still cannot drive and most do not know what the inside lane on a motorway is for.