Law abiding citizen checking in here. I also prefer to use crosswalks over eschewing them and will walk slightly out of my way to do so. However - in my area and some states around me - pedestrians at crosswalks get right-of-way and traffic is expected to stop. Traffic doesn't always stop, but more traffic stops if I'm at a sidewalk than if I'm standing by the side of the road.

I identify the speed limit and try to stay within 5 mph - 10 mph on the highway. On roads I am very familiar with, however, I do tend to drive as fast as I like - but I'm no speed demon and I find it's usually within 5mph of the speed limit anyway. If I don't know the speed limit I do occasionally find myself going far over as then I tend to follow the speed of traffic.

I've also never been pulled over by a cop - and in my opinion the less I talk to the police, the better, hands down, every time - so, so far, I'm content with my driving approach.

The one time I had to drive ridiculously slowly I had a spare on my tire that was not supposed to exceed 50 mph and, cautious person that I am, that meant that I tried to keep my speed at 45 or below.

edit

Twenty years of a 55 miles per hour speed limit created a low baseline that drags down speed limits today.

anchoring in practice kleinbl00 natch?