This document is part of Standard Specifications -- English Units.

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SECTION 1120

CHANGEABLE MESSAGE SIGNS

1120-1 DESCRIPTION.

The work covered by this section consists of furnishing, installing, maintaining, relocating and removing changeable message signs in accordance with the plans and specifications.

1120-2 MATERIALS.

All materials shall meet the requirements of Division 10 shown below:

Changeable Message Signs Article 1089-6

1120-3 CONSTRUCTION METHODS.

The provisions of Article 1105­3 will be applicable to the work covered by this section.

All changeable message signs furnished by the Contractor shall be mounted on a trailer designed to adequately support the message board in a level position. The changeable message sign shall be sited and aligned to optimal driver visibility.

The units shall be relocated for the various stages of construction as shown in the plans or as directed by the Engineer.

The Contractor shall provide an experienced operator for the changeable message sign during periods of operation to ensure that the messages displayed on the sign panel are in accordance with the plans or as directed by the Engineer. The operator shall ensure the message sign is illuminated properly to meet the existing light conditions. The operator shall make all adjustments for operation of the sign as required by the plans or Engineer.

Failure, malfunction, or damage to a changeable message sign, in operation for any reason, shall require the Contractor to expedite repairs. During the process of repairing the sign, the Contractor shall furnish another changeable message sign (approved by the Engineer and at no additional cost) or suspend all construction activities requiring the use of the sign until the sign is restored to operation, unless otherwise directed by the Engineer.

1120-4 MAINTENANCE.

The Contractor shall perform all maintenance operations recommended by the manufacturer of the sign. Maintenance shall include the periodic cleaning of the sign. All maintenance shall meet the requirements of Article 1105­4.

1120-5 METHOD OF MEASUREMENT.

The quantity of changeable message signs to be paid for will be the maximum number of changeable message signs acceptably placed and in operation, at any one time during the life of the project.

1120-6 BASIS OF PAYMENT.

The quantity of changeable message signs, measured as provided in Article 1120­5, will be paid for at the contract unit price each for "Changeable Message Signs" on the following schedule:

50% of the unit bid price upon delivery of the unit to the project.

20% of the unit bid price upon placing the unit in service.

20% of the unit bid price when the project is 50% complete.

10% of the unit bid price when the project is 100% complete.

Such price and payment will be full compensation for all work covered by this section, including but not limited to, furnishing, installing, relocating, maintaining, and removing the sign.

Payment will be made under:

Changeable Message Signs Each