Why??

I hope there will be an inquiry into the decision by the police to close a large section of the M5 following an accident in which a car left the motorway and collided with a power pylon. This resulted in motorists being gridlocked for some five hours. It may be that the police action was justified, but at first glance it seems to have been a massive over-reaction. Hence the need for an independent inquiry. There have certainly been suggestions that the police acted as they did simply "because they could", and I would have thought the police themselves would want the full facts brought out for public scrutiny.