Who do you trust behind the wheel?
New figures show that in the last five years, more than 56,000 drivers aged 70 and older have had their driving licence refused or removed for medical reasons.
The data, obtained from the DVLA by the price comparison website Confused.com, show that nearly 17,000 older motorists lost their licence in 2015 alone.
There are now more than 4.5 million drivers aged 70 and older on UK roads. This includes 239 motorists over the age of 100, and one man holding a full driving licence at the age of 108.
BBC News visited a driving test centre where the on-road behaviour of older and younger drivers was put to the test.
Video Journalist: Marie Keyworth
18 Mar 2016