Multiple road closures and crashes have caused traffic delays across the UK. The A19, A41, and A629 are affected, with detours in Aghagallon and Oxfordshire. Vehicle fires and collisions have led to extended delays 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 returning to normal. Drivers on the A19 in Sunderland are experiencing morning congestion after a crash and early hour traffic halt.