Whoever secures or attempts to secure the exemption from toll provided for in sections 1005 to 1007 of this title or an authorization referred to in , knowing that he is not entitled thereto, and whoever signs or issues any such authorization certifying to such right of exemption, knowing that such right does not exist, shall be guilty of a misdemeanor, and, upon conviction thereof, shall be punished by a fine of not more than $100 or by imprisonment for not more than ten days, or by both such fine and imprisonment.section 1006 of this title