In the not too far back past a tracktype grade6 was mentioned, even 7+8, especially documented for/by Australia. I’m fine with the 5 we have as 4-5 stop my cycle navs to take this in the computed routes, grade6 something along the line of horrible/impassable, and I know a few so washed out by torrential rain water racing down the steep hills and seeking the way of least resistance with gullies carved out you’ll go in thy deep. One is in fact signed by the road manager as it’s going past cell towers, part of a service way.
At any rate, think those grade6-grade8 of the outback specific wiki could use cross documenting in the regular tracktype wiki in a separate section maybe.
Some ‘tracks’ on steep ways have received a in-place cat concrete surface with diagonal and chevron like carving ever 10-15 cm to promote grip in the slippery days and season… that’d make them grade1 I suppose. Borrowed for illustration from a source we can’rt use, but a push-bkie cycled it up hill, 25 percent… the commentator at the top in garden recliner was kind to offer a beverage, just 30C, lol. Try it, it’s southbound towards Mutignano.
tactile_paving=yes 