Don't trust a gps to give an accurate depiction of where a road goes if you are unsure based on visual cues... It could cost you your life. Better to slow down until you can be certain based on facts on the ground.
Everyone has been telling me to watch "The Office" & in the episode i finally did watch Carrell drove his rental car into a lake when his gps told him to.
1) Ride like the other guy w/do the worst possible thing
2) Leave your attitude @ the door
many more, but they're mostly here already.