Another factor to consider that I don't see brought up much is having the sun in your eyes while driving. It seems to me that this is more hazardous in the mor

Another factor to consider that I don't see brought up much is having the sun in your eyes while driving. It seems to me that this is more hazardous in the mornings, when you're still trying to wake up and (possibly) dealing with fog/frost on your windshield as well. Also, I have no issues with going to work when it's dark out, but going home after dark has a more forlorn feel to it. I think permanent DST - in many latitudes - would alleviate the worst effects for drivers.