19. No person shall damage or leave open any fences or gates of any enclosure made by the Verderers under section 15(1) of the New Forest Act 1949 (temporary enclosures in case of outbreaks of disease) or leave open any gates across any passage or track under or over any highway in the Forest or any gates in any fences erected by the Verderers, the Forestry Commissioners or the highway authority alongside any highway in the Forest.