Originally Posted by
afwen
I have a whole bunch of personal rules, but here's the biggest one:
Don't overtake or ride alongside of moving cars on their right.
Close second:
Use a Take-a-Look mirror.
I hate mirrors - I've tried a variety of them including the well regarded wire one that clips to your helmet/glasses. I simply don't trust them - if I need to know what's back there, gotta look back and see for sure.