My personal pet peeve are the people who use the access roads to jump out of traffic and race through the access road as fast as they can to cut in to the regular traffic farther up.  While parked to go to the dentist I saw a guy almost get mowed down by one of these crazies.  He was simply stepping out of his car and out of no where comes a goon hoping to shave 3 minutes off his commute at the risk of everyone else around him.  This guy went on to jump the cement curb to force his way back into traffic.  A complete and total idiot.

I really hate that practice, makes my blood boil every time.  Maybe I will start taking license plate numbers and reporting them.