75-80 on the I-17 - I'm usually within 5mph one way or the other of the speed limit.. I just do my best to avoid knots of traffic if I'm gonna be traveling fast. Usually, slowing down below the limit will put the hairiest balls of traffic way ahead, but I'll also occasionally gun-it to get past big rigs, as I don't like being anywhere near those suckers, especially when it's windy as those trailers are sometimes swaying all over the lanes..
In more congested traffic I just go with the flow, rarely will I feel overwhelmed.. That's one good thing about riding a bike, if you keep calm and keep your wits about you, our size is gonna get us out of 98% of all serious situations.. The other 2%? ..Well.. I figure, that's up to God to figure out :lol: