1231PORTABLE CHANGEABLE MESSAGE SIGNS

1231.1DESCRIPTION—This work is to furnish and install a Portable Changeable Message Sign (PCMS)

subsystem for use in temporary and semi-permanent installations, and construction zones.

1231.2MATERIAL—

devices according to the physical display and operational requirements of the MUTCD. Provide PCMS consisting of a display panel, controller, support structure for sign display panel, a photovoltaic cell array, battery bank subsystem for powering the PCMS, an electronic control console, wireless communications interface, remote control software, and a heavy-duty trailer frame. Equip PCMS with a hitch to facilitate towing of the trailer. Provide capability of displaying a variety of messages using Light Emitting Diode (LED) matrices. Provide PCMS that functions in two mechanical modes, one mode for sign use and message display, and another for safely and securely transporting the sign. Provide PCMS capable of operating continuously on the solar power subsystem without regular maintenance for minimum of 3-month intervals. Furnish PCMS to meet a minimum 10-year lifespan. Furnish a sign according to NTCIP requirements for changeable message signs. Fabricate all nuts, bolts, washers, and other fasteners of corrosion resistant material. Provide a PCMS with the following components:

• CMS

• Trailer and CMS mount structure

• CMS controller and Wireless Communications Interface

• Solar power supply subsystem including solar array and battery bank

displaying messages with minimum of two phases, with each phase consisting of up to three lines of eight characters per line. Provide sign face that is colored black and complies with Federal Specification TT-E- 489. Equip sign display panel with an ultraviolet (UV) resistant, scratch resistant, glare reducing protective cover. Provide display panel protective cover with a glare -eliminating feature that prevents blurring and obstruction of the CMS messages. Provide CMS that is modular in design to facilitate easy repair. Equip display assembly with an automatic dimming operational mode capable of a minimum of 50% dimming under varying light conditions. Provide ambient light sensor to interface with automatic dimming functionality. Provide CMS display with minimum dimensions of 74 inches high by 126 inches wide, including the sign housing. Furnish CMS panel and mounting capable of rotating 360 degrees on its support mast. Provide capability to lock into position at any angle about the vertical axis to allow for optimizing viewing angle to oncoming motorists. Provide CMS enclosure that is weatherproof, dust proof , and rated for continuous operation or storage under the following conditions:

• Temperature of -30F and +165F

• Relative humidity of 20% to 95%, non-condensing

• Maintain physical integrity of equipment when subjected to a vibration of 5Hz to 30 Hz up to 0.5 gravity applied in each of three mutually perpendicular planes.

• Prevent equipment from suffering permanent mechanical deformation or any change rendering the unit inoperable if subjected to a shock of 10 gravities applied in each of three mutually perpendicular planes.

Ensure PCMS operation is unaffected by radio frequency interference (RFI) or electro-magnetic interference (EMI). Provide PCMSable to withstand constant wind speeds of 80 miles per hour in operating position and

70 miles per hour in transporting position. Equip CMS display with a sighting device to assist the operators in orienting the CMS display to provide maximum viewing capacity to motorists approaching the sign.

circular or triangular pattern to produce the appearance of a round dot to oncoming motorists. Provide 592 nanometer wavelength, amber-colored LEDs. Provide minimum CMS display brightness of 7,440 candela per square meter at maximum intensity. Provide pixels with a minimum viewing angle of 15 degrees about the vertical and horizontal axes, with no loss in intensity, color, or legibility within this cone of vision. Furnish interchangeable display modules t hat are mounted to the CMS using simple tools and nominal force and provide for easy replacement or changeability without the need for special tools.

of 8 characters per line with a minimum separation of 3 pixels between characters. Provide minimum 12 inch high characters. Present each displayed character using minimum 5 horizontal pixels and minimum 7 vertical pixels. Provide capability to display simple graphics on the CMS, including, but not limited to individual and series of vertical arrows with maximum height that matches the height of the full-matrix sign face, individual and series of horizontal arrows with maximum width that matches the widt h of the full -matrix sign face. Ensure line of sight is optimized according to Publication 852.

resistant coating. Equip trailer with tie-down points to facilitate storage and transport by securing the trailer to a utility trailer or flatbed truck. Equip trailer with class-A taillights, using a plug adaptor. Furnish trailer that can be set up at the site with its own chassis and outriggers, without being hitched to a vehicle. Equip trailer with fenders over the tires that are made from heavy-duty material sufficient to allow a person to stand and operate or pe rform maintenance on the unit. Delineate the trailers on a permanent basis by affixing retroreflective material in a continuous line on the face of the trailer as seen by oncoming road users. Finish trailer with a glossy federal safety aliphatic acryli c urethane finish. Provide orange color to conform to the MUTCD requirements for portable changeable message signs (PCMS). Provide a trailer mounting structure for the PCMS. Provide accessible mechanism to easily raise and lower the display assembly. Provide a locking device to lock the display panel in the raised or lowered position. Provide a single metal telescoping mast pole to mount the CMS that is an integral piece of the body of the trailer. Provide support capable of adjusting the height of the sign and allows the sign to rotate 360 degrees around the vertical axis of the support beam, without requiring more than a single operator to perform height or angle adjustments. Equip CMS with locking mechanisms that enable the CMS to be locked at any angle of rotation. Provide capability to elevate the center-point of the sign face to a minimum height of 10 feet. The locking mechanisms must prevent the CMS from changing angles during windy conditions or vibrations. Equip trailer with a hitch for connection to a towing vehicle. Provide hitch with a towing capacity of 5,000 pounds. All trailer hitch components must conform to SAE J684 Standards for Class II trailers. Equip hitch with a 1/4 inch safety chain for secure attachment to towing vehicle. Provide trailer with sealed, flush- mounted, combination stop, tail, and turn lights, and front and rear sided marker lights. Provide a rear license plate display holder, and a rear center identification light bar for illuminating the trailer license plate. Provide a rear fender. Provide four hydraulically or mechanically adjustable outrigger leveling pads permanently installed at each of the four corners of the sign trailer for leveling and support functions. Provide leveling pads with a minimum capacity of 2,000 pounds each. Provide leveling pads that are adjustable using a single operator, and without any special tools. The leveling pads must be capable of lifting the trailer, so the tires do not touch the ground. Equip trailer with tires according to ST225/75R15 Load Range C. Provide 5 -lug pattern wheel configuration. Affix the manufacturer’s name and the trailer make and model to trailer. Provide an operator’s manual within the control enclosure of each unit.

software to control the CMS. Provide electrical and communications connections to the controller of locking- type connectors to allow quick and simple removal of connections. Provide sign controller with a liquid crystal display (LCD) console for programming and operations. All CMS functions must be programmable and operable locally at the controller, using a built -in graphical user interface (GUI) that is integral to the

controller. Provide controller that displays an on -site graphical representation that visibly depicts the message displayed on the sign face. Provide controller and associated on -board circuitry to meet the requirements of the FCC Title 47, Subpart B, Section 15 regulations concerning the emission of electronic noise by Class A digital devices. Provide capability of remote control operation of the sign via a wireless communications interface that utilizes the ports specified, or locally via a laptop computer. Local connections to a laptop computer must facilitate routine repairs, diagnostics , and all other operational functions. Provide, at a minimum, the following interfaces to the sign controller: a USB port, Ethernet port, and serial port. Provide a wireless communications interface, field-hardened for long-term freeway deployment where it is typically subject to wide daily and seasonal temperature swings, wind gusts and typical road vibrations with an extended operating temperature range from -30F to +165F. C oordinate wireless communications interface type and configuration with the Representative for network compatibility. The wireless carrier data account will be provided by the Department. Provide the wireless interface as a unit deta ched from the PCMS controller to facilitate easy change out to other communications means. Equip controller with interface to accommodate a portable keyboard for inputting sign messages. Furnish portable keyboard that is compatible with the PCMS controller and deliver keyboard to location identified by the Representative. If Representative does not identify delivery location for the portable keyboard, place keyboard in the PCMS controller enclosure. Facilitate static and dynamic Internet Protocol ( IP) network connections in addition to serial dial-up modem connection and cellular 4G data modem connection. Protect all data and electrical connections from the CMS controller using transient voltage surge suppression (TVSS) equipment. Furnish controller capable of retaining time and date information and utilizing time and date information to facilitate an operational schedule for the display and removal of messages. Provide capability of storing 50 distinct messages locally in a message library. Furnish c ontroller that is unaffected by mobile radio, or any other ambient radio transmissions. Provide software for the control, monitoring, maintenance, and operation of the PCMS from a remote location. Include provision in the controller software that enforces authentication of operator credentials for control of the PCMS, for both local and remote controls. Include provision in the controller firmware that disallows the display of words contained in a user -defined list of disallowed words. Provide controller to monitor and display battery voltage levels on the GUI. The controller must provide battery voltage levels at any remote monitoring location and the ability to alert the system computer of a power failure or low battery voltage condition. Unacknowledged alerts will be resent a minimum of three times. Provide PCMS that is NTCIP compatible, supporting the following NTCIP standards:

• NTCIP 1201 (v3.03b). Global Object Definitions

• NTCIP 1203 (v3A-SE.06). Object Definitions for Dynamic Message Signs (comply with all mandatory User Need and Protocol Requirements as specified in section 3.3.8)

• NTCIP 2101 (v1.19). Subnetwork Profile: PMPP over RS232

• NTCIP 2104 (v1.11). Subnetwork Profile: Ethernet

• NTCIP 2201 (v1.15). Transport Profile: Transportation

• NTCIP 2202 (v1.05). Transport Profile: Internet

Equip the PCMS trailer with a metallic enclosure to house the sign controller. Provide a weatherproof and rust resistant enclosure that is securely fastened to the trailer structure. Equip the enclosure with a door with a key locking mechanism, and provisions for externally locking the door using a typi cal pad lock.

the sign and sign equipment. Using solar array, supply nominal voltage 12V DC. Provide solar array consisting of photovoltaic, single crystal silicon modules. Provide automatic recharging of power supply batteries to normal operating levels with meters showing charge. Securely mount the solar array to the PCMS for operation and transport.

Provide AC/DC battery charger. Provide battery bank that at full charge is capable of powering 20% of the PCMS pixels at continuous use for 7 days without recharging from the solar array. Equip battery bank with a battery controller to prevent overcharging and over -discharging. Provide battery controller with external battery level indicator. Protect the battery, controller, and power panel from the elements and vandalism. Provide battery subsystem with automatic recharging of power supply batte ries. Equip battery subsystem with meter to indicate if batteries are being charged or used. Provide battery bank consisting of low-maintenance, gel batteries. Contain the battery in a NEMA -rated compartment or enclosure that prevents water ingress during operation or transport. Fabricate the compartment to completely contain a ll spills from damaged or malfunctioning batteries. Provide battery enclosure that is separate from enclosure to house CMS controller.

lockable window at the main frame of the PCMS, to allow the use of power feed from an alternate power source such as a generator set on trailer, or road -side power outlet. Provide a selector switch inside the window that connects the internal loads of the PCMS to the battery-powered subsystem, or the above AC- to-DC power converter. Include provision for the external AC power to charge the batteries if the PCMS operates using the external AC power. Provide AC-to-DC power converter that converts 120 volts alternating current ( VAC) power to DC power suitable for operating the PCMS. Provide window with a grommet-lined semi-circular notch at the bottom to allow passage of extension cord with the window closed. Provide twist locking type receptacle. Provide an extension cord with male plugs at both ends that is suitable for outdoor uses, oil resistant, minimum 50 feet long, and equipped with three 12 AWG conductors. Provide cord if one of the plugs is regular type and the other plug is suitable for use with twist locking type receptacle. Deliver cord to the location identified by the Representative.

grounding conductor to the PCMS assembly. Provide deliberate grounding connection from the trailer frame and the PCMS controller frame, to this grounding terminal. Provide grounding terminal suitable for terminating a wire of up to 2 AWG. Provide painted signage next to the grounding terminal, with 1 -inch tall black letters on white background, stating “PROVIDE GROUNDING TERMINATION HERE.”

in Publication 647. Provide the following:

• Class A Cement Concrete. Section 704

• Galvanized or Epoxy Steel Wire Fabric. Section 709.3

• Geotextile Fabric, Class 4, Type A. Section 735

• Hot-Dipped Galvanized or Stainless-Steel Tie-Down Anchors

• No. 57 Coarse Aggregate. Section 703.2.

1231.3CONSTRUCTION—As shown on the Standard Drawings and as follows:

not interfere with the visibility requirements.

of messages using a typical keyboard and GUI of the control software.

recommendations and as indicated.

area free of debris so a maintainer can access the unit and be protected from most vehicular traffic. Configure all outriggers to equally support the weight of the trailer and ensure the unit is completely level.

1231.4MEASUREMENT AND PAYMENT—

Includes trailer, CMS mount, CMS display, batteries, solar array, wires, connectors, integration, training, documentation, and all work for a complete subsystem.

• 50% of payment will be made upon delivery of the PCMS.

• 30% of payment will be made upon demonstration of full functionality of the sign locally (not from the TMC/RTMC). Full functionality is demonstrated upon successful completion of standalone acceptance test as specified in Section 1201.3(b).

• 20% of payment will be made upon successful integration of PCMS controls at the TMC/RTMC and completion of system test as specified in Section 1201.3(b), as required.