Very quickly, on the issue of fatigue, I see there was a note here that one of the railways was cited for allowing engineers to work past regular hours. The airline industry keeps an eye on it. The trucking industry is a question, but that's a mixed bag of jurisdictions across the country.
One of the things that hasn't been studied as far as I know is the long-term effects on the people who are forced to work weird hours, that later in life they have almost the impact of PTSD.
Is there any thought to looking at that? We could be buying ourselves a lot of trouble in the years to come just because of the work rules that exist today.