[fophillips]

I imagine that knocking someone off their bike counts as "erratic driving".

[collyw]

As a cyclist (and driver), it is as likely to be the cyclists fault.

[inopinatus]

Not so. A study by Westminster Council found fault with the cyclist in only 20% of collisions between bicycles and motor vehicles.

http://www.thetimes.co.uk/tto/public/cyclesafety/article3758...