(1) If any person enters upon or into any part of a railway without lawful authority, or having lawfully entered upon or into such part misuses such property or refuses to leave, he shall be punishable with imprisonment for a term which may extend to six months, or with fine which may extend to one thousand rupees, or with both:
     Provided that in the absence of special and adequate reasons to the contrary to be mentioned in the judgment of the court, such punishment shall not be less than a fine of five hundred rupees.
     (2) Any person referred to in sub-section (1) may be removed from the railway by any railway servant or by any other person whom such railway servant may call to his aid.