 Motorized users of the trail system must wear a DOT-approved helmet and are prohibited from "doubling" (having a passenger), unless their vehicle is designed for two people.These rules, and a host of others, have allowed the trail system to enjoy a quality safety record, despite an increase in ATV-related injuries around the country.The management of the trail system is directed by a chief executive officer or executive director, who is appointed by the board of directors.