|A classification scheme for the difficulty of specifically designed trails for mountainbiking.|
|Used on these elements|
|Tools for this tag|
The Trail Difficulty Rating System shall be used for mountain bike trails which are specifically designed and designated for mountain biking, to be found in "Bikeparks", for example. For "natural" trails it is advised to use mtb:scale=* and mtb:scale:uphill=* instead.
mtb:scale:imba=0 to 4.
0 refers to Easiest (white circle), 1 is Easy (green circle), 2 is More Difficult (blue square), 3 is Very Difficult (black diamond), and 4 is Extremely Difficult (double black diamond).