if you are gonna ride, know your limits
i rode in the slap dash alleycat in PDX during the NAHBS was going on, i was the only rider in my group of 5 that knew portland, and most of the time the guys from out of town were leading the pack, hitting intersections that i'd definately approach more cautiously. lucky we didnt have any acidents but common sense would dictate you dont go balls out towards a blind intersection, espically if you dont know the area.