I always stop at red lights and am the dork who pushes the button for the pedestrian "walk" signal at some of them....as for stop signs, I don't stop if it's a four-way stop and I can see there is no traffic....although I do tend to slow down to insure that no one is coming. When cycling on single lane roads around tight corners with a car behind me, I also try to see ahead and signal for the car when it's ok for them to safely pass me.....when we respect the car drivers I think they respect us more....