Monday 9 February 2004 11.40am
I'm with Ivanhoe on this one. Although I can't be sure, when those cameras appeared at the end of last year I had assumed they were some kind of anti terrorist measure. You'll notice that the cameras face both ways on each gantry which is unusual for speed cameras.
I've seen similar gantries in other places, there's one on Farringdon Road/Clerkenwell Road lights.
There are cameras that work in the way you describe in Limehouse Link - so it's no use slowing down the for the camera as your speed has been measured through the whole tunnel.
And hasn't the speed limit been 20mph there for a while? I only realised it was on Bermondsey Street
as I left the 20 mph zone....