I’m surprised to learn that any part of the park is open during the wintertime.
With those type of vehicles it should be safe. And accidents do happen whether the road conditions are perfect as on a sunny summer day or not so perfect as on a snow covered winter day.
We have a tracked vehicle especially set up for snow travel with a warm cab and heater. It’s really fun to look at the winter wild life while just cruising around or going across a frozen lake.