Is it only for bysycle or must be used by mofa klass a? And for klass b? Thanks in advance....for both side

Halo can someone tell me what is the diffrence between this 3 schild for example f99b ther is an imahe of a pedesterian and cyclist but on book i have read on this road a rider (horse rider)may also use this road , And my second question is about bus and tram track f17 and f18 a bus track are we all...