Multiple reports say a record heatwave is creating hazardous conditions for motorists and prompting safety guidance to postpone non-essential travel. The RAC urges drivers to avoid journeys unless necessary, warning that extreme temperatures can weaken road surfaces and increase the risk of damage, including road deterioration that could affect driving safety. The RAC also warns that higher temperatures increase the likelihood of vehicle problems, meaning more car breakdowns are expected during the hottest periods. The guidance is aimed at reducing the number of vehicles on the road when conditions are most likely to become unsafe and to lower the burden of roadside incidents. Overall, the reports describe the same core message: extreme heat poses both infrastructure risks for roads and operational risks for vehicles. Drivers are advised to plan trips carefully and consider whether travel is essential given the potential for deteriorating road conditions and higher rates of breakdowns.