On the residential roads I ride on, people go about 30-35. Posted speed is 25-30. On the few main roads I take, people go at least 40, but the posted speed limit is never over 35. I can get up to about 35 on a good day, so I figure I'm safe (relatively speaking) on roads where the posted speed limit is 35. If people want to get angry about how "slow" I'm going, then they can kiss my ass because I'm going the speed limit.