Dalton Highway
This is a road in Alaska that can get icy. The weather here can change in no time whatsoever! A lot of the time, the only ones that can make it through this route would be giant trucks.
Ruta Nacional 5
Ruta Nacional 5 goes through vast expanses of deserts, which is dangerous enough as it is. On top of that, there are also very sharp drops that will jolt you awake at the very least.