be made for the initial installation only. Relocation of signs will be incidental to the measurement of the quantity of signs. Work Zone Signs (Portable) will be measured and paid as the actual number of square feet satisfactorily installed and accepted by the Engineer. Payment will be made for the initial installation only. Relocation of signs will be incidental to the measurement of the quantity of signs. No direct payment will be made for stationary work zone sign supports or portable work zone sign stands. All stationary work zone sign supp orts or portable work zone sign stands will be incidental to the work of providing work zone signs. Payment will be made under: Pay Item Pay Unit Work Zones Signs (Stationary) Square Foot Work Zones Signs (Barricade Mounted) Square Foot Work Zones Signs (Portable) Square Foot
FLASHING ARROW BOARDS -1 DESCRIPTION Furnish, install, operate, maintain, relocate and remove arrow boards. -2 MATERIALS Refer to Division 10. Item Section Flashing Arrow Boards 1089 -6 Provide arrow boards listed on the NCDOT APL . Poor performance of arrow boards at any site, whether or not related to a specific contract, will be grounds for non- acceptance of a product on any project under contract. -3 CONSTRUCTION METHODS Use arrow boards that have the capability to display mode selections. Do not use straight -line caution or chevron displays. Mount flashing arrow boards on trucks, trailers or other mobile units. Expedite repairs due to failure, malfunction or damage to a n arrow board . Furnish another arrow board approved by the Engineer during the repair time. Repair or replace arrow boards immediately; otherwise, suspend all construction activities requiring the use of the arrow board until the arrow board is restored to operation. Perform all maintenance operations recommended by the manufacturer of the arrow board . When arrow boards are not in use for 72 or more hours , they shall be relocated such that they are outside of the clear zone or shielded behind a traffic barrier and turned away from traffic. -4 MEASUREMENT AND PAYMENT Flashing Arrow Board will be measured and paid as the maximum number of arrow boards satisfactorily placed and accepted by the Engineer in use at any one time during the life of the project as required by the contract. Flashing arrow boards installed on truck mounted attenuators (TMAs) will not be paid for separately as they are incidental to the cost of the TMA.