What Do Barriers Mean?

Combined with the cyclist post today....here is another.

There is a road closure in town today on a major artery, but it is Sunday so to avoid week day traffic.

There are barriers across the road, road closed sign. About 200 metres down, you can see the bridge in the air (bridge over a river) which is being repaired. Obviously you can not go thru.

Well I saw 3 vehicles drive past the barriers, go down and uturn and return.... and you were going where ? The barriers were placed there just for an the fun of it b/c someone was bored?

I've seen a lot worse.. Flashing lights from 4 cruisers blocking the road and 1 ambulance.. People still tried to get through. At least the a-holes got nailed with tickets