RSA 106-N:7: Carrying of Shield.

Each railroad police officer so appointed and commissioned shall, when on duty, carry a shield or star with the words "Police", "Railroad Police", or "Railway Police", and the name of initials of the appointing railroad inscribed thereon. This shield, or star, shall be worn in plain view when in uniform. Such police officers shall also carry, when on duty, an identification card issued by the appointing railroad.