Last time I went through there you wouldn't want a camper trailer behind you between the Aberlfedy river and Walhalla, very narrow and windy with almost no passing areas.
Tight??
My uncle used to cart logs out of there with a 1418 'Benz and single axle jinker, and my Dad carted pulp on billets with an old Albion and single axle pig trailer. Very very slowly, with very careful positioning of the logs on the jinker so they didn't dig into the bank at the back or hit the cab at the front.
But it was a long time ago. Early '70s. With stories of driving the truck from the running board because it was to hot in the cab whilst climbing the hill from Thomson River bridge.
Ahhhh. The good ol' days.
Peter