London Bus.

fodentanker:
Millions of £s spent converting the whole Tunnel area and it takes 2 people sitting on the top deck of an old London Bus spotting the Hazardous Vehicles that have missed the slip road to the control area.

You couldn’t make it up.

Wot happens if the hazard vehicle has tried hard to play it right, and got into the 16’6" lane (cos he’s 15’11" for instance…) only to find themselves shooting straight through on the right?