People were stuck in traffic for up to 8 hours on Wednesday after a serious crash between junctions 5 and 6 of the M25. People suffered with heat and with not having access to facilities, particularly those with youg children and the elderly. I was stuck on the same stretch last Friday for 3 hours.
When you join the M26 from the M20 you can't exit till junction 6, a distance of around 18 miles, it forms the longest unbroken distance between motorway exits in Britain where drivers cannot leave the road.
Operation Brock allows the other carriageway to be used and apparently some European countries have a similar scheme to evacuate vehicles in the event of collisions.