DH has driven on the ice roads. They are really the only way to access the oil rigs across miles and miles of muskeg (swamp). He has driven pickups and rig sized vehicles. They have specialists who monitor the state of the roads and you must follow the rules. He said it isn't such a big deal as long as you follow the rules. I think they are just searching for things to sensationalize. I imagine it could get hairy if there is a blizzard though. DH says the weight of the vehicle driving along the ice creates a wave under the ice, so the speed limits must be adhered to or the ice can break up.
Maybe it
is more dangerous than he is letting on