From daily experience of 10 miles of the M25, the all-lane-running has had a broken-down car in a live lane (i.e. the lane is not closed with a red X) about twi

From daily experience of 10 miles of the M25, the all-lane-running has had a broken-down car in a live lane (i.e. the lane is not closed with a red X) about twice a year for me. Also there are vague electronic signs saying "reports of obstruction", "report of blocked lane" or "reports of pedestrians" with no further actions (like a lane closure) maybe twice a week. There very rarely actually is an obstruction to be seen in the end, so the signs get ignored, even when there is an actually dangerous hazard like a car in the middle of a lane. > British drivers have terrible lane discipline on motorways They certainly do. They even made it illegal a few years ago, but it's virtually never enforced. For a start, there aren't very many road police to enforce it. A small but significant number of people also completely disregard the red X markers and zoom down closed lanes towards, presumably since they don't usually do the red X for fun, a broken down vehicle or accident. This is very much illegal (though it's only a £100 fine), but again seems not to be enforced sufficiently to prevent it.