No additional specifications were given. A. These specifications cover a one-way three-section vehicular traffic signal with its mounting hardware and a five-section adjustable type vehicular traffic signal with its mounting hardware. B. The lens opening shall be nominal 12". C. Each signal shall include: housing, doors, visors and wiring devices. Lamps are to be furnished with the signals if specified in the pricing sheet. D. Each signal face shall consist of three sections, unless otherwise specified on the purchase order. Signals shall be delivered assembled, except for visors. 5- section heads shall be assembled in the cluster (“doghouse”) configuration. E. The signal shall be designed to operate on 120 VAC, 60Hz single phase power.