(a) The Department may employ a general manager for the purpose of supervising the operation of toll crossings constructed or maintained by it and may appoint such number of guards and toll keepers as may be deemed advisable by it for the proper operation of the Delaware Memorial Bridge and any toll crossing over the Delaware River constructed or maintained by the Department.
(b) The general manager, guards and toll keepers shall have the powers of a constable in the performance of their duties, and the Department shall procure and keep in force at all times a fidelity bond or bonds issued by a bonding company qualified to do business in this State to protect the Department against loss arising from the fraudulent or dishonest conduct of any such persons with respect to funds or property of the Department or of the State within the control of the Department, and the Department may pay the costs of such bond or bonds out of its revenues.