09- 137 C.M.R. ch. 11, § 11
There shall be areas designated by appropriate signs as spectator areas at all snowmobile races in which spectators shall at all times be confined. The spectator areas shall include, but not be limited to, grandstands, bleachers, and stadiums. The pit areas, practice areas, those areas specified in Figures 1 and 2, infield areas, and corner areas of race tracks are not spectator areas. At snowmobile drag races, only one side of the track may be designated as spectator area. Spectator areas shall be protected by utilizing safety barrier construction of either Option 1 or Option 2, contained herein.
If Option 1 is used, spectators shall not be allowed beyond the spectator protection fence and shall not be allowed access to the trackside fence or to the area between the spectator protection fence and the trackside fence; if Option 2 is used, spectators may be allowed access to the trackside fence. The snowmobile race track surface must be maintained in a manner that does not permit any snow build-up against the trackside fence.
09- 137 C.M.R. ch. 11, § 11