So today I decided to name a phenomena that I get to experience a good bit in Chicago. I call it "dashing", or if referring to an individual, I call them "The Dasher".
"The Dasher" is the rider who, at one of the many stoplights in the city, must weave around other stopped bikers to get to the front. As the light turns, the dasher hammers to get up to cruising speed. The dasher is then passed by the rest of the riders as they gradually get up to speed (all of whom have a faster pace than the dasher).
Today my dasher was a middle aged man on a mountain bike. I passed him once while going at my average, nothing special, pace. I was the sole biker stopped at a light a little ahead. He, while obviously knowing that my pace was faster than his, weaved around me and stopped just ahead of me. Green light > DASH!!! >> 50 yds later, I have to pass him again...not always the most fun in Chicago traffic. This happens 2 more times. The last being near the loop w/ a pack of about 8 of us. Sometimes I wonder if biker behavior is much more courteous than drivers. I guess he wasn't endangering me.