What are your biggest pet peeves as bike commuters, and if you could request motorists to do anything to make bike commuting safer, what would it be (realistically)?
I would probably ask them to use their turn signals more often. My commute goes across a couple of exit lanes that lead to highways, and from my vantage point it's sometimes hard to tell if the approaching cars are exiting (and thereby crossing my path) or not, and whether I can just start crossing the street. So it would make my life a lot easier (and my commute faster) if those drivers exiting onto the highway would just hang up their bloody cell phones and turn on their blinkers once in a while.
Any other thoughts?