With temperatures forecast to soar as high as 40C in some parts of the country, motorists are being put on red alert for potentially treacherous road conditions. A rare red weather warning for extreme heat has been issued across a broad swathe from London to Somerset, Swansea, and up towards Birmingham, effective from Wednesday morning until Thursday evening.
The AA has highlighted several risks for drivers, including the potential for road surfaces to soften or become sticky under the intense heat. This could lead to patches becoming uneven, impacting vehicle braking, steering, and overall grip. Motorcyclists and cyclists are particularly vulnerable to these conditions, which can also dislodge loose material.
Beyond road conditions, the extreme temperatures pose a significant threat to vehicle integrity. Under-inflated, damaged, or older tyres are particularly susceptible to failure in hotter conditions due to increased pressure and strain. The AA advises drivers to meticulously check tyre pressures, tread depth, and sidewalls before embarking on long journeys.
The warnings extend to the safety of passengers and animals. Motoring experts stress that individuals and pets should never be left unattended in parked cars, even for brief periods, as the interior can rapidly become dangerously hot, posing a severe risk to life.
The heatwave is also anticipated to cause broader disruptions across the transport network, affecting rail, road, and air travel. National Rail has advised passengers to check their journey plans in advance, anticipating potential service alterations and delays.