A lot of the time races don't start on time because the stewards are not in position on time. Each time I'm on course I watch what time they get into position, more than half the time they are 1 min or more late. Horses and drivers are ready for several min but just have to wait for stewards. This just fires some horses up and the start gets delayed even more. I believe they should be watching the warm ups for strange behavior as well as the race.