I do not know, wether somebody of you will bike in southern Germany (state of Baden Wuerttemberg), but if somebody does so, he or she will have to notice, that biking in the forests is only allowed on paths with a width >2m
The German Mountain Bike Association (http://www.dimb.de) and some other organisations are now fightig against this regulation with an official petition to the parliament of Baden Wuerttemberg.
The petition can be found and signed under URL http://www.2m-weg.ecosport.de.
An english translation is attached (please excuse mistakes) find in http://www.petition-2m-weg.ecosport.de/2m_engl_139.png

The German Mountain Bike Association (http://www.dimb.de) and some other organisations are now fightig against this regulation with an official petition to the parliament of Baden Wuerttemberg.
The petition can be found and signed under URL http://www.2m-weg.ecosport.de.
An english translation is attached (please excuse mistakes) find in http://www.petition-2m-weg.ecosport.de/2m_engl_139.png