(b) The post exchange may only be open at such times as may be established by the superintendent.
(c) The superintendent shall appoint state police employees to supervise the operation of the post exchange.
(d) The superintendent shall establish a system of bookkeeping, accounting and auditing procedures for the proper handling of funds derived from the operation of the post exchange.
(e) The superintendent shall post a sign in the post exchange which states: "In accordance with the provisions of section seventeen, article two, chapter fifteen of the code, it is unlawful for every person who is not a member of the state police to wear or use the state police uniform, badge, emblem or other insignia. Any person, who is not a member of the state police, who wears or uses the state police uniform, badge, emblem or other insignia shall be guilty of a misdemeanor and, upon conviction thereof, shall be fined or jailed or both fined and jailed".