If you are attending mandatory courses then your travel should be protected with insurance provided by your employer, invariably this is classed as working hours so you should be paid. I once had to travel at 04:30 to attend a very long intense course and was told that i could not travel the day before. The drive was long and i got to the course with 2 mins to spare and already tired and in need of caffeine. My boss at the time however flew to a conference the night before and flew back the day after but nobody questioned it.
And we wonder why people leave their employment when crap like this happens.

30 years since the Chernobyl disaster and yet we still have no super heroes or zombies.