Came across a fellow commuter this am. I'd judge him to be a newbie. Coming up behind, he stopped at the stop light and positioned in the ped crosswalk. We both went through the intersection, him slightly ahead, then he looked left and merged back into the lane. Doh. The shoulder narrowed up ahead so he went back on the sidewalk. I passed on the downhill and stopped at the next light, in the lane. He caught up to me on the sidewalk. I didn't feel like lecturing him. "Nice day for a bicycle ride". "Yep, gotta beat those gas prices". "Where you headed?" "Downtown". "Me, University". "Have a good one". Keep on truckin newbie! And don't get killed jumpin off those sidewalks!