paulj wrote:
But as one who grew up in the mountains, a true switchback is one where a pickup has to execute a 3 point (or more) turn, the equivalent of turning around in the middle of a city street. The only paved route that I've encountered like that is in Yoho Nat Park (BC). One pair of curves is signed, telling vehicles longer than 7 meters (21 ft) to back up the middle leg.
:E:E:E
It's not a highway but a campsite road that can only hold one truck and on one side is a deep ravine.
Fortunately, those who traverse this road know the road protocols and are thoughtful.