A few years ago a friend’s family was visiting the DC area from South Africa. The man who was driving had never been to the US, never driven on this side of the road, and never driven in snow. In SA they drive on the other side of the road. He left Dulles and the road were completely snow covered and it was snowing like nuts. He ended up merging onto an exit. Thank God a VA state trooper was right behind him and pulled him over. He was actually very kind, no ticket and let him on his way. I have a friend from AU and when we travel there she always drives . I think on main highways it’s fine as you can easily follow traffic presuming there is some, but if the road is abandoned and snow covered, or you are on a side road, it’s easy to make the mistake.

that being said someone with a CDL would not be in this situation.