weepej wrote:
Sure is, I reckon most motorway wide queues at junctions are caused by people zooming up the right hand lane then cutting across at the last second.
IME, they seem to be caused by inadequately specified sliproads leading to stationary traffic queueing back along L1, which then catches out some drivers who end up blocking L2 while they try to find a gap in L1 into which they can squeeze, and who then in turn force all the traffic not wanting to leave the main carriageway over into L3 to get by... I see this pretty much every morning heading out of London on the M40 going past the M25 turnoff, and then in the evening heading back into London on the M4, again going past the M25 turnoff.