The AA has issued a safety alert to drivers as the UK bakes under extreme heat, warning that sweltering conditions, dehydration, and lack of sleep could lead to more mistakes and aggressive behaviour on the roads. The motoring organisation says the combination of high temperatures, heavy traffic, and tiredness can leave motorists irritable and prone to errors, particularly during the morning commute.
UK Heatwave: Temperatures Could Reach 40C
The warning comes as parts of the UK remain under Met Office Red and Amber heat alerts, with temperatures expected to stay exceptionally high through the middle of the week. Forecasters say some of the hottest areas could see temperatures climb towards 38C to 40C, while many people face uncomfortable nights that make it difficult to get enough sleep.
The AA fears that a lack of rest, coupled with long delays in heavy traffic and soaring temperatures inside vehicles, could fuel aggressive driving behaviour. Motorists are being urged to stay hydrated, allow extra time for journeys, and avoid reacting to the actions of other road users.
Dehydration and Driving: Comparable to Drink-Driving
The AA pointed to research highlighted by DriveTech, its driver training division, which found that dehydrated drivers can make as many mistakes behind the wheel as motorists under the influence of alcohol or drugs. Dehydration can also lead to fatigue, impaired concentration, poorer short-term memory, and slower reactions, according to the organisation.
Edmund King, president of the AA, said: "Hot weather, heavy traffic and tired drivers are not a good mix. If people have struggled to sleep in the heat, they may be less patient, less focused and more likely to make mistakes on the morning commute.
"DriveTech, the driver training arm of The AA, has highlighted how dehydration can seriously affect driver performance in a similar way to drink or drugs. In this heat, keeping water in the car is not just about comfort, it is about safety."
Road Rage Warning: Stay Calm and Avoid Aggression
The AA warned that frustration caused by heat and traffic can manifest itself through tailgating, harsh braking, speeding, and aggressive overtaking. Drivers who begin to feel drowsy have been urged to stop somewhere safe and take a proper break, while those who are too tired to drive should delay their journey if possible.
King added: "Road rage can escalate quickly, especially when people are uncomfortable and rushing. Stay calm, avoid reacting to other drivers, keep a safe distance and remember that everyone else is dealing with the same heat.
"If you feel too tired to drive, delay your journey if you can. If you start to feel drowsy behind the wheel, stop somewhere safe and take a proper break."



