On the way to work yesterday, I witnessed an idiot in a Merc rear-end a 7.5 tonne truck at the southbound lights on London Bridge - the front of the car had collapsed into a V where he'd hit what I assume was the tow-bar. Then on the way home, City Police were demonstrating a total inability to direct traffic - one of them was trying to wave traffic coming off London Bridge through about 50 pedestrians who were crossing on a green man. Then, at the same lights as the morning crash, a National Express Coach smashed his nearside mirror on the back of one of those caged rubbish vans whilst trying to fit through a non-existent gap. The cage of said van had several orange flashing lights on it. This morning I went the other way, and was rewarded by courteous white van drivers letting me out into the right hand lane, holding back at pinch-points etc and a very good run of green lights.