Bangalore traffic - bus stops 1

Does not simple logic dictate that if a vehicle stops near a turning, it would hamper the movement of other vehicles behind it?
Why are there so many bus stops in Bangalore @ turnings - either before the turn, or worse after the turn?
This combined with the roads being narrow is a surefire cause for traffic pile ups!
(This was earlier blogged on 4-Nov-08....but nothing has changed!)