Re: A good thing in principle, but
Indeed, if you are stupid enough to filter up the inside of a large vehicle at a corner you are asking for it.
The trouble is that far too often the driver, either due to impatience or inattentiveness, pass the cyclist and then turn immediately left.
This often happens at lights, particularly were there is an advanced stop box. The lights go green and the impatient driver, irritated at a "bloody cyclist" stopping in front of him or her accelerates past and cuts across left in front them.