There are some indications that those one hour switches can be dangerous because of the impact in those two days. I’m not saying it is clear, but there is impact. Both because the driving conditions improve with respect to lighting, but conversely because driver alertness is lower due to sleep troubles for the time change.

Personally I’ve never really bought the whole “more sunlight” thing. We get precisely the same amount. Of course, you mean during business hours but I just don’t feel that is very relevant to a broader society with more diverse schedules.