I have driven the Coq many times, often in less than ideal conditions, and believe me, those wrecks are not staged. Granted, the crew adds drama for the cameras but overall that is hard, dangerous work in miserable circumstances. That road is the lifeline between the port of Vancouver and the rest of the country.
There are pullouts along the way for chaining up, signs stating that it is mandatory when the amber lights are flashing but many are too lazy to comply. Others are from out of the province and not familiar with winter in the mountains, often don't have chains let alone knowing how to use them. Blowing the pull out barefoot (without chains) nets a hefty fine and tow bill.