I understand the theory of slowing down traffic in a 'rolling roadbloack' in order to repair potholes (that strategy isn't employed already) but one friend last week posted that his break-down situation- a flat tyre - caused a complete stop until his car was recovered, and the same thing yesterday. How on earth can it be productive to halt all that traffic for one vehicle? Close off a lane, or maybe two, by all means, but the whole road? Not productive.

As for the theory of slowing everything down to avoid traffic jams - I have an alternate theory - speed everything up to get them off the road faster ;)