Mmmmmm........bicycling in Boston. Just moved from there last September to San Diego. I commuted to work 2 days a week from the Fenway area, in addition to a stint as a messenger. Staying alive is definitely a main priority. As to running red lights, going the wrong way down the street, riding on sidewalks; I guess you just take the same attitude cagers do. I commute by motocycle here in SD, and I'm thankful for the "hyper-attention to what's going on around me" skills cycling in Boston taught me. Man I miss that place.......