Quite.
Ah, another good (bad) one.
If you are new to that area you either have to commit to that lane a go wherever it then takes you or hold back a bit (so as to indicate you aren't trying to take advantage) and hope someone let's you in.
Then you see those who *regularly* take advantage of others by diving into a motorway exit at the last minute, after 'jumping' maybe half a mile of traffic, or those cutting up access roads to push in further ahead.
The worst I've seen for a long time was just a few days ago when a builders van went down the outside of a long row of queuing traffic (past us and on the wrong side of the road) to turn right into a shed carpark. I said to the Mrs, 'I bet he'll be out again in a second' (even though the place was open), and he was, only to push back into the queue again. I placed that bet because only someone looking to jump the queue would overtake that much queuing traffic in the first place.
The only other thing that stops me doing something in those circumstances (other than common sense) is the knowledge that they will get their uppance somewhere else at some time.
Cheers, T i m