Restaurants don't need to change their hours - they need their employees in before the rush hour and working during it because that is when people are going to be there. You 7:45 coffee on the way to work was made by someone who got in at 6:00 am to setup the coffee pot. Hospitals aren't going to change their shifts (unless staff demands it - they might), but a large number of people going in at rush hour are not doing shift work where they need to be in at a particular time. I can adjust my schedule a lot if I want, fares (and traffic) can be motivation to doso.