The DVLA has revoked hundreds of driving licences over fears their owners are no longer safe to be on the roads.
People were banned from the roads over sleep-related conditions, and fears there was a risk of them falling asleep at the wheel and causing a crash.
Hundreds more licence applications were refused for the same reasons.
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These likely would have included older drivers, at a time when the Government is considering tougher rules for motorists over 70.
And the total number of licences revoked due to sleep-related conditions has risen over recent years, along with refused applications, new data showed.
Experts say driving while severely tired can have a simi