Sharraxaadda

What is the law or rules regarding motorcycles, dirt bikes and arc usage at freestone park? We are constantly having motor and ATT’s go up and down the bike trail on the south side of Freestone park at high speeds raising all kind of dust? I have asked politely to several people and have gotten nothing but taunting and cussed out. Can you put a stop to this or who do I need to go to?