Rob Fisher

The video speaks for itself.

Actually, I learnt some time ago that the M4 bus lane isn’t really a bus lane at all—it’s a cunning traffic management scheme that solves a problem caused by a bridge that can’t be widened.

Update:  The article explaining the bus lane is part of Chris’s British Road Directory, which is a fun site if you’re in the mood for geeky articles about junction design and road numbering.