229:2 Primary Highway System. – There shall be a system of highways known as the 'Primary State Highways System' which shall consist of all existing or proposed highways designated on a map entitled 'Primary State Highway System, 1945,' prepared by the commissioner and filed in the office of the secretary of state. Source. 1945, 188:1, part 1:2. RSA 230:2. 1981, 87:1, eff. April 20, 1981.
New Hampshire Legal Code