Multiple road closures and crashes have caused slowdowns across the UK. The A19, A41, and A629 are affected, with alternative routes in Aghagallon and Oxfordshire. Vehicle fires and collisions have led to lengthy traffic jams and diversions. The A19 has seen slowdowns due to an early morning crash, while the A41 in Hertfordshire was shut down for 50 minutes after a vehicle fire. Traffic on the A19 southbound at Crathorne is improving. Drivers on the A19 in Sunderland are experiencing rush hour delays after a crash and early hour traffic halt.