On the base
of the tree types of ruts on soil combined with the behavior of lumps of
soil when they are thrown against any surface, the Bavarian State Forest BaySF
has developed a practical reference sheet:
• If you have the type 1 and the soil
lump is stable, you may drive.
• If you have the type 3, then stop
driving immediately
• If you have the type 2 and the soil
lump can be formed easily, you should try to drive very carefully: