It is an ANIMAL, its instinct is to run away from danger or predators.
My cousin was an engineer, he hit a couple of deer over the years.
The railroad told him, NEVER blow the horn, the animal will FREEZE right on the tracks.
You can hear the men on the train, they did feel bad.
Have you ever hit a squirrel or rabbit in the road, it does make you feel bad.
Why didn't the moose just turn Left or Right?
Because its an animal NOT a human.
Its instinct is RUN RUN RUN.
That poor moose, probably couldn't figure out how that LARGE predator (the train), was RUNNING so fast.
The trouble over in other countries, is NOT deer or moose, but CAMELS.