Driver Guides

Driver Fatigue - Why Staying Alert Could Save Your Life

Published 22nd June 2026

Driver fatigue remains one of the most underestimated risks on UK roads, with safety experts warning that tiredness plays a role in far more collisions than official figures suggest. Government data records fatigue as a factor in around 4% of reported crashes, but road safety organisations such as GEM Motoring Assist believe the real figure could be closer to one in five (20%), and possibly as many as a quarter of fatal or serious incidents.

The danger is simple. Tired drivers react more slowly, make poorer decisions, and may even fall asleep without warning.

A “microsleep” lasting just three seconds means a vehicle travelling at 70mph covers more than 100 metres with no steering or braking input at all. It’s why fatigue-related crashes are often high-speed and high-impact, often with devastating consequences.

Hot weather adds another layer of risk.

Long motorway journeys in bright sunshine and stuffy cabins can accelerate dehydration and drowsiness, especially for drivers who haven’t rested properly. GEM is reminding motorists to stay hydrated, keep their vehicle well-ventilated, and build in extra breaks to your journey during warm spells.

James Luckhurst, GEM’s Head of Road Safety, says the warning signs are rarely subtle: “Fatigue isn’t something that suddenly takes over - it builds gradually, and your body gives clear warning signs. Ignoring those signs can cost lives.”

Frequent yawning, drifting within a lane, difficulty concentrating and missing road signs are all early indicators that a driver needs to stop. The message is clear: no journey is worth pushing through tiredness.

Planning ahead, recognising the signs and taking timely breaks remain the simplest and most effective ways to stay safe.

Plan journeys and stay alert

GEM offers five simple tips to reduce the risk of a fatigue-related collision:

Get a good night’s sleep before setting out on a long journey.
Avoid driving at times when you would normally be asleep.
Steer clear of heavy meals before or during a journey, especially at lunchtime.
Stay hydrated. Take a break of at least 15 minutes after every two hours or 100 miles of driving; get out, stretch and refresh yourself.
If you feel tired, stop as soon as it is safe. A short nap and caffeine can help temporarily, but proper rest is essential.