742.03 Construction Requirements.
741-B State Furnished Portable Sequential Arrow and Chevron Sign Unit - per each 741-C Portable Sequential Arrow and Chevron Sign Unit - per each PORTABLE CHANGEABLE MESSAGE SIGNS
742.01 Description.
This section shall cover the work of furnishing new portable changeable message signs or utilizing State furnished portable changeable message signs. The furnishing of new signs includes all services and operational supplies necessary to provide a functional sign unit. All changeable message signs shall be in compliance with the current edition of the M UTCD (Manual on Uniform Traffic Control Devices).
742.02 Materials.
a.General . All changeable message signs shall be designated according to "Type" with a Type 1 having a one-line message display panel, a Type 2 having a three -line message display panel, and a Type 3 having a Full Matrix display panel. If ownership of the sign is to be retained by the State and the sign is vehicle mounted, the sign unit shall be suitably adaptable, including all connections, for mounting onto a standard size 1/2 -ton picku p truck. The sign framework and installation shall be structurally adequate to allow complete sign operation, including raising and lowering the sign panel at sustained highway speeds of 62.5 miles per hour {100 km per hour}.
b.Type 1 Message Sign . A Typ e 1 sign shall be a portable, one -line, changeable message sign suitable for mounting on either a truck or on a two -wheeled trailer. The sign system shall consist of a single line sign panel assembly, controller, power supply, structural support system, al l applicable software, and manuals.
c.Type 2 Message Sign . A Type 2 sign shall be a portable, three -line, changeable message sign mounted on a two -wheeled trailer. The sign system shall consist of a three -line sign panel assembly, controller, power supp ly, and structural support system, all mounted on a two -wheeled trailer. The sign unit shall be furnished with all necessary cabling, software and manuals.
d.Type 3 Message Sign . A Type 3 sign shall be a portable, full matrix (variable letter, graphic, a nd symbols), changeable message sign. The system shall consist of a full matrix sign panel assembly capable of producing an inverse display with a programmable controller capable of displaying standard traffic safety and custom symbols. The sign and power plant shall be trailer mounted. The sign shall be furnished with all necessary cabling, software, and manuals.
742.03 Construction Requirements.
a.General . The Contractor shall utilize to the fullest extent the Changeable Message Sign whenever any potent ial hazardous condition exists that would require extra emphasis in warning the driver of any emergencies that might arise during the construction, or at any location directed by the Engineer. Any message used on the sign shall be approved by the Engineer.
b.Pay Item 742 -A. The Contractor shall furnish a new or used sign unit, and shall be totally responsible for the required performance of the sign. An acceptable sign unit shall be one of the units listed on List IV -3, WORK ZONE TRAFFIC CONTROL DEVICES, Sub-Heading "Message Signs" of the Department's "Materials, Sources, and Devices with Special Acceptance Requirements" manual. Information concerning this list can also be found in Sub -article 106.01(f). The Contractor shall retain ownership of the sign un it when the Engineer determines that the sign is no longer needed.
742.04 Maintenance Requirements.
c.Pay Item 742 -B. The Contractor shall furnish a new and fully functional sign unit. An acceptable sign unit shall be one of the units listed on List IV -3, WORK ZONE TRAFFIC CONTROL DEVICES, Sub -Heading "Message Signs" of the Department's "Materials, Sources, and Devices with Special Acceptance Requirements" manual. When the Engineer determines that the sign unit is no longer needed, ownership shall be transferred to the Depar tment.
d.Pay Item 742 -C. The Contractor shall use a Department furnished sign unit. The Contractor shall clean, service and repair the sign unit when the Engineer determines that the sign unit is no longer needed, and shall return the sign unit to the De partment and transfer the title of the unit to the Department.
742.04 Maintenance Requirements.
The sign unit shall be kept in good repair at all times. Failure, malfunction or damage to the unit for any reason shall require the Contractor to expedite the repair, or replacement, and furnish adequate flagmen or other approved means, at his expense, to provide a safe means for the control of traffic until the unit is put back into service. Maintenance shall include the periodic cleaning of the unit along wit h the repair of damage to the protective coating of the unit. Sign units furnished under Pay Items 742 -B (Contractor furnished) and 742 -C (State furnished) shall be stored in an approved, secure storage area when not in use. The Contractor shall perform al l maintenance operations recommended by the manufacturer of the sign and keep complete records of this maintenance.
742.05 Delivery of Unit and Transfer of Title, Pay Items 742- B and 742- C.
Prior to the completion of the project, and when the Engineer determines that the sign unit is no longer needed, the Contractor shall clean and service the unit to insure that the unit is in good operational condition. After Departmental personnel inspect the sign unit and find it to be in good operational condition with all working parts functioning, the unit, along with a copy of the unit's operating manual, maintenance records and title transfer (title transfer required under Pay Item 742 -B), shall be delivered to the location designated by the Engineer.
742.06 Method of Measurement.
Measurement of Portable Changeable Message Signs will be by complete individual sign units for the type sign furnished. There will be no overrun of this item without written permission of the Construction Engineer.
742.07 Basis of Payment.
a.Unit Price Coverage . The ordered and accepted sign units, measured as noted above, will be paid for at the contract unit prices which shall be full compensation for fabricating and furnishing the unit to the project, if required, for the exclusive use during the project, for maintenance and operation of the unit during the life of the contract, and includes all equipment, tools, labor, services, supplies, and incidentals necessary to complete this item of work. The contract price for Pay Items 742 -A and 742-B shall also include the reconditioning of the unit, transfer of the title of the unit, if required, and delivery to the designated storage location.
b.Payment will be made under Item No .: 742-A Portable Changeable Message Signs, Type ____ - per E ach 742-B State Retained Portable Changeable Message Signs, Type ____ - per Each 742-C State Furnished Portable Changeable Message Signs, Type ____ - per Each SECTION 745 UNIFORMED POLICE OFFICERS
745.01 Description.
This Se ction shall cover the work of furnishing Uniformed Police Officers to assist in directing traffic through work zones. Officers furnished and paid for under this Section will be allowed only at the
Source: Alabama Standard Specifications for Highway Construction, 2022 Edition. Pages 692–692 of 934.