Yes on two-lane roads I try to go the speed limit when someone is behind me. I think most of us here do that. It DOES get frustrating when a passing zone free of oncoming traffic comes up and they don't pass me. Sometimes I even move right to the very edge of the pavement to try to encourage them. Where there is a posted minimum the police shouldn't be able to hassle you if you are going over the minimum. Of course this doesn't stop other drivers from hassling you. It's up to each driver to evaluate for themselves, but personally I feel uncomfortable under 47 in a 65 around here, even though with a 40 minimum it's legal. Anything higher than 47 works for me, but as I said I try to stay 50 or above. Also, heavier traffic slows the flow, so going slow is actually less of a safety problem above a certain traffic density. More of a psycho problem though because people are more touchy when they're tangled in a dense pack of cars.