Trail Difficulty

Value list for the directions response values in

$.routes[*].extras.traildifficulty.values

This extra provides information about a trails difficulty for hiking as well as for mountain-biking.

Value	foot-*	cycling-*
0	no tag	no tag
1	sac_scale=hiking	mtb:scale=0
2	sac_scale=mountain_hiking	mtb:scale=1
3	sac_scale=demanding_mountain_hiking	mtb:scale=2
4	sac_scale=alpine_hiking	mtb:scale=3
5	sac_scale=demanding_alpine_hiking	mtb:scale=4
6	sac_scale=difficult_alpine_hiking	mtb:scale=5
7	---	mtb:scale=6