Don't ride in a bike lane against traffic. It's dangerous. There is a higher potential of accidents at every intersection as the cars are not expecting you to come from that direction. And other reasons as well. I can't see your exact situation so it's hard to say exactly, but in most cases it's better to ride on the right in the lane with the traffic.
Also, with practice you can turn your head and see on all sides of you with just the one mirror.
Last edited by 2manybikes; 03-27-05 at 11:54 AM.