1230CHANGEABLE MESSAGE SIGNS

1230.1DESCRIPTION—This work is to furnish and install a light emitting diode (LED) based, full color,

full matrix Changeable Message Sign (CMS) subsystem. The CMS will be utilized to disseminate traveler information to motorists that may include, but is not limited to, road closure information, adverse weather and roadway conditions, detour routes, and travel times.

1230.2MATERIAL—

of the CMS Subsystem:

• A letter from the manufacturer certif ying the sign has been designed and furnished according to all AASHTO guidelines and requirements.

• Sign housing shop drawings.

• Certification verifying the ambient operating temperature range of the CMS.

• LED brightness and color bins that are used in each pixel. Provide a letter of certification from the LED manufacturer that demonstrates testing and binning according to the International Commission on Illumination (CIE) 127 (1997) standard.

• A list of the character fonts and samples of the fonts.

of vision of 15 degrees around the vertical axis of any pixel on the sign. Provide CMS with front-panel or walk-in accessible to maintenance crews. Furnish a CMS subsystem complete with all individual units, components, software modules, cabling, connectors, etc. that are completely compatible with each other and the existing Advanced Traffic Management Software (ATMS) at the Traffic TMC/RTMC. Provide Ethernet (copper Cat.6) or fiber optic connection between the CMS Controller in the ITS Node Cabinet and the CMS enclosure communications interface electronics. Provide single mode (or multi -mode) fiber connections between the controller cabinet and the CMS cabinet according to the manufacturer ’s recommendations. Provide power conductors between the CMS cabinet and the controller cabinet, according to the manufacturer’s recommendations in separate conduit. Provide two spare Ethernet (copper) ports, or combo fiber/copper ports at the communications interface. Provide a CMS subsystem where all exposed material on the CMS, enclosure, and other exposed appurtenances is corrosion resistant. Prevent ambient magnetic and electronic fields, including fields generated by the CMS itself, from interfering with or disrupting subsystem performance. Prevent magnetic and electronic fields generated by the CMS subsystem from interfering with other electronic systems near the CMS. Fabricate, weld, and inspect CMS according to ANSI/AWS. Seal or otherwise make indelible all identifications, including labels, markings, and engravings, on the sign and its components. Furnish all equipment to allow maintenance access from the front panels or from the central corridor of a walk-in sign for ease of maintenance. Require no special tools to access the sign or its components. Enable all equipment to be accessible without disassembly for inspection and maintenance purposes. Orient all equipment indicator lights, LEDs, and user interfaces in a manner that is readily visible to maintenance or inspection crews accessing the sign. Provide readily accessible and clearly labeled test points for maintenance or inspection crews to test voltage at essential locations. Terminate all external connections using industry standard, safe, tamper resistant connectors. Key connectors to resist improper hookups. Provide the capability to store at least 132 pre-programmed messages (100 permanent and 32 temporary) locally at the CMS or in the device TMC/RTMC software or both. Furnish CMS meeting the criteria of the following codes and standards:

• NEC

• AASHTO. Standard Specifications for Structural Supports for Highway Signs, Luminaires, and Traffic Signals, with current addendums.

• AASHTO. Standard Specifications for Highway Bridges

• AWS D 1.2 Structural Welding Code. Aluminum and AWS A 5.1 & A 5.5 Structural Welding Code. Steel

• ASTM International

ͦ ASTM A36 Steel ͦ ASTM B209 Aluminum and Aluminum Alloy Sheet and Plate ͦ ASTM A325 High Strength Bolts ͦ ASTM B686 Aluminum Alloy Castings, High Strength

• Electrical Testing Laboratories, Inc. (ETL)

• Electronic Institute of America (EIA). EIA/ TIA-232- E Interface Between Data Terminal Equipment and Data Circuit Terminating Equipment Employing Serial Binary Data Interchange; and EIA-422- A Electrical Characteristics of Balanced Voltage Digital Interface Circuits

• MUTCD and Standard Alphabets for Highway Signs and Pavement Markings most current version adopted by the Department

• NEMA. TS4 Standard

• TS4-2005 Hardware Standards for Dynamic Message Signs with NTCIP requirements

• NTCIP Standards (most recent approved versions):

ͦ NTCIP 1101 - Signal Transportation Management Framework (STMF) ͦ NTCIP 1102 - Base Standard: Octet Encoding Rules (OER) ͦ NTCIP 1103 - Simple Transportation Management Protocol (STMP) ͦ NTCIP 1201 - Global Object Definitions ͦ NTCIP 1203 - Object Definitions for DMS ͦ NTCIP 2001 - Class B Profile ͦ NTCIP 2101 - Point to Multi-Point Protocol Using RS-232 Subnet Profile ͦ NTCIP 2102 - Subnet Profile for PPP over FSK Modems ͦ NTCIP 2103 - Subnet Profile for Point-to-Point Protocol using RS 232 ͦ NTCIP 2104 - Subnet Profile for Ethernet ͦ NTCIP 2201 - Transportation Transport Profile ͦ NTCIP 2202 - Internet (TCP/IP and UDP/IP) Transport Profile ͦ NTCIP 2301 - Application Profile for Simple Transportation Management Framework (STMF) ͦ NTCIP 2303 - Application Profile for File Transfer Protocol (FTP)

• Standards for Enclosures for Electrical Equipment (Publication No. 250)

• Standards for Wiring Devices. Dimensional Requirements (Publication No. WD6)

• NFPA-70

• OSHA

• UL

• ANSI

• IEEE

• International Standards Organization (ISO)

sign to withstand wind loads defined in Publication 647 without deformation, damage, or unreasonable fatigue. Fabricate external skin of the sign housing of aluminum alloy 5052 H32, a minimum of 0.125 inches thick. Attach a ll external cables to the sign housing using clamps, or by other means as directed; adhesive attachment is not acceptable. Encase external cabling in rigid galvanized steel (RGS) conduit. Continuously weld all external seams, joints, excluding the sign face panels or display, using inert gas welding method. The maximum number of seams at the top of the sign housing is three. Stitch weld the external sign housing to the internal housing structure to form a single, unitized structure. Fabricate all external sign mounting assembly components from aluminum alloy 6061-T6 extrusions, with minimum size of W6x15 according to Publication 647. Provide Z -Brackets according to Publication 647, each of a minimum thickness of 0.25-inch. Attach all structural members to the internal framework of the sign. Use of a third Z-Bracket is based on project and wind loading requirements. Provide mounting calculations according to AASHTO Standard Specifications for Structural Supports for Highway Signs, Luminaires, and Traffic Signals, 4th Edition, 2001, including interims through 2006. Provide a minimum of four drain holes on the bottom of the sign housing that are centered from the front to back edges of the bottom sign panel and spaced evenly across the sign’s full length. Screen all drain holes to prevent the entrance of small insects and animals. Slope the bottom of the sign housing panel towards the drain holes to prevent the accumulation of water at the bottom of the sign. On the top panel of the sign housing, provide multiple steel lifting eyebolts or other equivalent hoisting points to be used during transport and installation. Lifting bolts or hoisting points are to be connected directly to the sign housing internal structure. The hoist points must enable the sign to be lifted evenly during transport and installation. On the top panel of the sign housing, make provisions to prevent the pooling or collecting of water on the top of the sign housing.

moisture, dirt, dust, or other foreign objects to permeate the sign face at the seams or at the edges of pixel holes. Construct sign face panels of aluminum, and coat with a matte-black coating system according to or exceeding American Architectural Manufacturers Association (AAMA) Specification 2605. Provide sign face panels that do not limit the cone of vision of the individual LED pixels, or sight distance of the sign as a whole.

panels that are modular in design, and allow for ease of removal, and interchangeability.

2.a Lens Panel. Provide lens panel mask fabricated of aluminum. Finish mask with a matte-black coating system according to or exceeding AAMA Specification 2605. Perforate the panel to provide an aperture for each pixel on the display modules. Each aperture must be as small as possible, without blocking the LED light output at the required viewing angle. Provide lens panel glazing that is 90% ultraviolet (UV) opaque polycarbonate, clear in color, and laminated to the inside surface of the lens panel aluminum mask to form lens panel assembly.

out of aluminum alloy 6061 -T6 or 6063-T5. Provide internal structural members to accommodate all LED mounting and air distribution subsystems as applicable. Provide internal structural members to retain the display modules in a manner that facilitates ease of maintenance, including the rapid r emoval of individual display modules. Enable the removal of individual display modules without interfering with adjac ent or surrounding modules.

to or exceeding AAMA Specification 2605. Provide certification from the licensed coating manufacturer for all aluminum face materials.

housing door that is fabricated from aluminum. Equip sign with a minimum of two vertically hinged access doors located at the right and left sides (while facing the front of the sign) of the CMS housing. Mount doors to door frames that are integral to the sign housing. Provide stainless steel hinges to support the door and enable the door to open outwards. Furnish access door to be a minimum of 2 feet wide and 80 inches high. Equip door with a handle-operated locking mechanism, closed- cell neoprene gasket, and stainless steel hinges. Locate door release leverss o a person without keys and tools cannot become trapped inside the housing. Furnish doors with a hinge/stop mechanism that retains the door in a 90-degree open position. Furnish a Grade 1 three-point center-case dead bolt locking mechanism that conforms to ANSI/Builders Hardware Manufacturers Association (BHMA) Standard A156.2 and utilizes a zinc finish. Provide a handle on both the inside and outside of the door. Furnish industrial-strength, corrosion-resistant handles. Equip door with electronic monitoring subsystem that provides an alert to TMC/RTMC personnel if the door is opened. Equip CMS housing with an OSHA compliant anchor point at each entrance location for the connection of a personal fall arrest system. Provide anchorages strong enough to withstand a force of 5, 000 pounds, as required by OSHA. Locate anchoragess o they will not allow a person to free- fall more than 6 feet if a 6 foot lifeline is used. Locate anchorages just inside each access door within easy reach from the outside, and just outside the access door within easy reach from the doorway.

that allows servicing of internal components. Access must not require specialized tools or excessive force.

environment requirements established in NEMA TS4. Provide sign housing that ensures functionality of all CMS equipment in the ambient operating temperature range of -29F to +165F, or as defined in the most recent version of NEMA TS4. Where ventilation subsystem is utilized to ensure conformance to NEMA TS4, provide positive pressure, filtered, forced air sign housing ventilation subsystem that distributes air over all LEDs, power supplies, communications equipment and other electronic devices contained in the C MS housing. Evenly distribute circulation across display modules, in the cavity between each display module, across lens panels and the back of the display modules. Submit ventilation subsystem design calculations to the Representative for acceptance before sign installation. Provide screened or filtered intake holes to feed ventilation subsystem. Provide holes large enough to accommodate the air intake necessary to provide ventilation to the entire sign housing. Provide ventilation subsystem capable of being tested automatically once each day, and capable of being tested on command from remote and local control access locations. If a failure occurs, send an error message to the TMC/RTMC or a laptop computer through the CMS controller. Provide ventilation subsystem capable of operating without decrease in performance over an ambient operating temperature range of - 29F to +165F as per NEMA TS 4, Subsection 2.1.5.1, with a maximum relative humidity of 100%. Provide a fail-safe ventilation subsystem that includes a snap disk thermostat that is independent of the sign controller. Preset the thermostat at 130F. If the sign housing’s interior reaches 130F, activate the thermostat to override the normal ventilation subsystem, bypassing the sign controller and turning on all sign ventilation fans. The fans will remain under the control of the thermostat until the internal sign housing temperature falls to 115F, at which time the fail-safe subsystem will return control of the ventilation subsystem to the sign controller. Include a manual override timer switch located just inside the access door to manually activate the ventilation subsystem. The switch must be adjustable to run for up to 4 hours. Furnish a sensor or a sensor assembly to monitor airflow volume to predict the need for a filter change and capable of being tested on command from remote and local control access locations. If a failure occurs, send an error message to the TMC/RTMC or a laptop computer through the CMS controller. The ventilation subsystem fans must possess a 100,000-hour L10 life rating. Provide inlet and exhaust filters which are 1-inch thick, permanent, reusable, electrostatic filters that require no electrical attachment. Provide filters which are easily removable from within the sign housing without the use of tools.

Provide blower that is capable of providing a minimum of one sign housing volume change per minute. Position the blowers to provide a balanced airflow to the ventilation subsystem if failure of any blower occurs. Make all ductwork that impedes access to any sign components to be easily removable, without tools, for servicing of these components. Fabricate all ductwork from minimum 0.040 inches aluminum. Furnish ducts that are extremely efficient with minimal pressure drop throughout the subsystem.

and monitored by the sign controller. Provide the capability for the sign to blank itself if a user-defined critical temperature threshold is exceeded. Provide the capability for the user defined critical temperature threshold to be monitored and changed remotely from the TMC/RTMC or other location, using the sign controller.

humidity in 1% or smaller increments. Provide interface between the sensor and the controller. Allow for the humidity to be monitored remotely from the TMC/RTMC. Provide a sensor with accuracy better than plus or minus 5% relative humidity. A humidistat is not acceptable.

Furnish sensors that employ a sufficient number of photocells in the appropriate locations to measure ambient light conditions. Position photocells to measure light levels on both the front and rear of the sign, and light levels at the sign location. Furnish sensor that provides the CMS controller with accurate ambient light conditions at the sign location and can be monitored remotely from the TMC/RTMC. Configure controller to react to the light conditions by brightening or dimming the sign LEDs. Reduce the brightness of the pixels in low ambient light and increase in high ambient lighting. Avoid pixel blooming in low -light conditions. Automatically adj ust LED brightness in small enough increments so the brightness of the sign changes smoothly, with no perceivable brightness change between adjacent levels. Make provision to prevent perceivable brightening of the sign due to stray headlights shining upon the photo sensors at night. Provide brightness and color of each pixel that is uniform over the sign’s entire face within a minimum 15-degree viewing angle in all lighting conditions. Non-uniformity of brightness or color over the sign’s face is justification for rejection of the sign by the Representative.

with a minimum of four internal light fixtures. Near the door, locate a 12- hour timer without hold feature for the lights. Make certain that all fixtures are spaced evenly above the walkway and fully enclosed in shatter- proof protective fixtures. Furnish emergency lighting that automatically illuminates the interior if a power outage occurs. Prevent light produced from the internal lighting fixtures from being visible from outside the sign during nighttime or dark conditions and prevent light from interfering with normal visible operation of the sign. Equip sign housing with at least three 15 A, 120 volt rated ground fault interrupter (GFI) outlets that include protected duplex electrical receptacles. Locate one duplex receptacle at each end of the sign housing and one at the center of the sign housing. Space the duplex receptacles evenly on the rear wall of the housing at a height of between 1.5 feet and 3 feet above the walkway.

throughout the manufacturer’s sign subsystem(s). Removal or replacement of a complete display module or LED board must be able to be accomplished without the use of special tools. Furnish display modules containing solid-state electronics to control pixel data and read pixel status.

suitable for displaying three lines of characters. Provide a minimum of 11 characters per line, and a maximum of 24 characters per line, as indicated. Provide 12-inch or 18-inch-high display characters with a standard character size ratio of 5:7, width vs. height . Standard Font character spacing will follow MUTCD guidelines for inter-character and inter-line spacing.

a minimum 15 degree viewing angle centered around the optical axis, or zero point, of the pixel, with a peak

wavelength of 590 nanometers. The peak wavelength must not vary by more than ± 2 nanometers. Provide pixels on the CMS and in the spare parts to have equal color and on-axis intensity. Provide sign display to produce an overall luminous intensity of at least 7440 candelas per square meter when operating at maximum intensity. Measure brightness according to the International Commission on Illumination’s (CIE) requirements as detailed in the Test Method A of the CIE 127 (1997) standard. Provide capability to test pixel operational status remotely from the TMC/RTMC, or at the site using a laptop computer pixel test. Provide subsystem capable of producing a log file that includes the pixel status, module number, column number, and pixel number. Provide pixel status test to determine the functional status of the pixel as stuck-on or stuck-off and does not affect the displayed message for more than half a second. Individually mount each LED directly on a printed circuit board (PCB). Provide LEDs that are individually removable and replaceable using conventional electronic repair methods. Prevent the failure of one pixel from affecting the functionality of any other LED on the PCB.

with connectors for power, controls, and data; contains display module control electronics and memory elements; and provides the signals to switch the LED pixels. Furnish display modules that have identical vertical and horizontal center-to-center distances (i.e., pitch) between adjacent pixels ranging from 0.59 inches to 1.00 inches. Provide separation between the last column of one display module and the first column of the next module that is equal to the horizontal distance between the columns of a single display module. Provide NEMA FR4-rated black LED PCB. Alternate LED PCB configurations are to be submitted to and accepted by the Representative before installation. Provide PCBs that allow components to be removed and replaced without damage to PCB, traces, or tracks. Finish all PCBs with a solder mask and a component - identifying silk screen. Provide all PCBs, except for the power supply and the pixels on the front of the PCB, with a complete and uniform coating of silicone resin with a minimum thickness of 0.01 inch. Meet the material requirements of MIL-I-46058C Military Standard, United States Department of Defense (USDOD). Mount all LEDs so the mechanical axis of the LED is ±1 degree to the sign’s face to ensure uniformity of brightness over the sign’s face. Ensure LEDs are secured perpendicular to the display module within 0.5 degrees. Prevent devices used to secure LEDs from blocking air flow to the LED leads or blocking the LED light output at the required viewing angle. Provide all-black components on the LED side of PCBs. Provide multiple power supplies to provide power to each display module. Power supplies must be redundant and rated so if one supply fails, the remaining supply will be able to operate 100% of the pixels in that display region at maximum brightness. Furnish sign controller that continuously measures and monitors all LED module power supply voltages and provides power readings that indicate to the TMC/RTMC or a laptop computer if the power is sufficient or insufficient on command. Automatically generate an error message to be sent to the TMC/RTMC or a laptop computer if it polls the sign controller and voltages measured are outside nominal values. Protect LEDs from external environmental conditions, including moisture, snow, ice, wind, dust, dirt, and UV rays. Do not use hoods, louvers, cylinders, or visors that could impede the free flow of air over all surfaces of each individual LED. Do not use epoxy to encapsulate the LEDs.

Interchange (ASCII) characters 32 through 126, including all uppercase and lowercase letters and digits 0 through 9, at any location in the message line. Display uppercase alphanumeric characters over the complete height of the matrix. Provide characters legible under all light conditions within the minimum 15-degree cone of vision centered on the pixel’s vertical and horizontal optical axes. In addition to the standard character size ratio of 5:7, width vs. height, provide sign capable of displaying compressed ratio (i.e., 4:7), expanded ratio (i.e., 6:7), or double-stroke ratio (i.e., 7:7) character fonts, and capable of changing the default spacing between characters. Provide spacing options to include 1-, 2-, or 3-pixel columns between the characters. Provide font that conforms to the local District’s requirements, including height, style, boldness, and font type. If there is no District-required standard font, load the subsystem with a default font according to the Standard Font set described in NEMA TS4-2005 (section 5.6). Font types incompatible with existing District central control software or ATMS software may be grounds for rejection of the sign. Configure subsystem to allow the assignment of font access privileges. Provide sign controller capable of a self-updating time or date display or both on the sign. Provide sign capable of showing additional graphics or characters.

Provide controller to receive sign control commands from TMC/RTMC and a local, on-site laptop. Program controller to transmit responses, as requested, to the TMC/RTMC, and t o control sign operation, message displays, and maintenance polls and statuses. Provide sign controller to control the following operations:

• Message displays.

• Sign blanking.

• Logic or data error logging

• Error reporting to the TMC/RTMC and local laptop

• Providing operational status of the sign and all its components, including each individual pixel, to the TMC/RTMC and local laptop via polling, or real-time transmissions

• Provide all sensor readings including internal and external temperature, photocell, airflow, humidity, LED power supply, and sign door opening to the TMC/RTMC and local laptop.

• Temperature thresholds to activate temperature control devices.

• Specified as recommended by District TMC/RTMC Personnel per ECMS contracted project.

• Provide Option, as determined by the Department, to provide three dry contact inputs that can be used for two Emergency Messages and one to put the unit into “local” if remote contacts are closed.

Transmit each sign function control to the TMC/RTMC using related communications media. Provide controller capable of being polled on command and on a user -definable schedule. Provide controller with the capability of storing a minimum of 100 logs locally if communication fail. Utilize ambient environmental conditions collected by the sensors in an algorithm that activates the temperature control devices within the sign, including the ventilation subsystem, fans, and heating devices, if the temperature exceeds or dips below the temperature thresholds set in the sign controller. Furnish sign controller that consists of, at a minimum, local control panel status indicators, including power on/off, TMC/RTMC communications status, laptop computer communications status, communications status with the electronics in the walk-in housing (as applicable), and sign diagnostics and error status. Provide sign controller that provides automatic power-up commands that blank-out the sign automatically when recovering from power off conditions, and automatically returns to standby conditions if power is removed then restored. During power-up procedures, the sign must return to a preprogrammed message, is blanked, or can display graphics or characters as desired by the TMC/RTMC. Provide a hardware watchdog circuit to provide automatic recovery from critical errors, and automatic shutdown if critical hardware failure occurs. Provide a CMS controller that blanks the display in user-definable situations including, but not limited to, pixel failure, extended communications failure, or extended power failure. Provide a ground-level access point and an in-sign access point at the sign location that allows the sign to be programmed and controlled via a local laptop. Prevent pedestrians from accessing the sign controller or changing displayed messages without permissions. Protect access to sign controller using security authentication or login if accessing the sign locally via a laptop computer. Provide a controller containing:

• Clearly Labeled Manual On/Off Switch

• Momentary contact switch that resets the sign controller

Provide electrical field connections by barrier type terminal connection blocks as defined in NEMA TS1. Identify all terminal block connections and locate so readily accessible for maintenance. Provide all wire

and cable terminations made with insulated spade terminals as defined in NEMA TS1. Soldering of field terminal connections is not allowed. Provide the latest version of the CMS client/server software on the CMS controller. Provide software that is compatible with the existing ATMS software and hardware at the TMC/RTMC. The software must, at a minimum, provide password protection to restrict access to the program and the sign control functions, and the ability to fully control all programmable functions of the CMS.

the display modules and the sign controller. Contain the following display subsystem components in the sign housing or the field enclosure:

• CMS controller

• Display subsystem interface circuits.

• Display modules.

• Power supplies

• Local and remote-control switches

• LED indicators

• Electronic Industries Alliance (EIA)-232 plug-in connection for laptop computers, EIA-232 null modem cables (minimum of 4 feet for connection of laptop and controller)

• Workspace and convenient outlet for a laptop computer

• Communications equipment for communications with the TMC/RTMC

• Transient voltage surge suppressors

EIA 232 serial interfaces, and one Ethernet Local Area Network ( LAN) RJ45 port. The interfaces must accommodate communications to the TMC/RTMC, the managed network switch, and to a local laptop. Provide serial interfaces to support:

• Data bits: 7 bit or 8 bit

• Parity: even, odd, none, mark, or spare

• Number stop bits: 1 bit or 2 bit

Terminate all cables for Ethernet connection over copper media according to EIA/TIA-568-C standard. Configure one EIA-232 serial interface to drive asynchronous modems for full duplex communication with the TMC/RTMC over point-to-point dial-up lines or a multidrop fiber or copper network. Switching between dial-up, Ethernet, and multidrop operation must not require sign controller software or hardware modifications. Configure the second EIA-232 serial port for local communication with a laptop computer. The charges acquired for installing and connecting communications cables and for all deployments involving cable services from outside service supplier are at no additional cost to the Department. Provide modems to be retained by the Department at each location. For dial-up operations, provide a user-selectable data transmission rate of up to 19.2 kbps. Configure sign controller and software to display single- page and multi -page messages, with mixed fonts and spacing. Provide message page times and text flashing rates that are programmable between 0.5 seconds and 5 seconds in 0.1-second increments.

Provide subsystem to log and report errors and failures, including data transmission errors, receipt of invalid data, communication failure recoveries, alternating current power failures, power recoveries, pixel status reads, fan and filter airflow status where applicable, temperature status, power supply status, and information on the operational status of the temperature, photocell, airflow, humidity, sign door opening and LED power supply sensors. Report airflow and humidity sensor information us ing the objects from the dmsClimateCtrlStatusTable of the NTCIP 1203 V3 standard. Fiber Optic modules or Fiber Optic Small Form Factor electronics, or fiber optic-to-copper (Cat.6) media converters, and their associated power supplies, must be temperature hardened and meet the environmental operating requirements as specified in 1230.2(d)5.

• Master operation, where the TMC/RTMC commands and controls the sign and determines the appropriate message or test pattern.

• Local operation, where the sign controller or a laptop computer commands and controls the sign and determines the appropriate message or test pattern.

For walk-in signs, keep electronic components away from the access door to protect them from the elements. For front and rear-access signs, keep electronic components away from the access panels where possible to protect them from damage or corrosion due to exposure to the elements. Provide CMS capable of performing the following functions:

• Control Selection. Provide local/remote switch on the local control panel that functions in parallel with the local/remote switch located in the ground control box. Provide a LED indicator near the local/remote switch to indicate if either switch has selected the local mode. The operating mode is determined by the position of the mode switch on the local control panel. If the local control panel’s switch is set to local, the operating mode is local. Otherwise, the operating mode is master.

• Message Selection. Use keypad to select a blank message or any one of the messages stored in the sign controller’s nonvolatile memory if the control mode is set to local.

• Message Implementation. Activate the selected message.

Provide sign controller that transmits a return message to the TMC/RTMC whenever it receives a valid status request. Return messages must contain an Internet Protocol (IP) address for the sign controller, the actual message that is visibly displayed on the sign, the displayed message’s transmission origin (i.e., the TMC/RTMC, laptop computer, manual entry, etc.), remote or local control status, error and failure reports, temperature readings, access alarms, power supply voltage levels, line voltage, and Uninterrupted Power Supply (UPS) status. If a sign controller failure occurs, blank any displayed message. During power loss, provide capability to display a user-defined message, including a blank page. Message additions, deletions, and sign controller changes must be made either remotely from the TMC/RTMC or a local laptop computer. Provide capability to activate messages with specified run- time duration. Upon expiration of a run- time duration, display a user-defined message, including a blank page. Prevent perceivable flicker or ghosting of the pixels during sign erasure and writing periods. If an AC power loss occurs, retain all non-volatile memory for a minimum of 30 calendar days. Provide controller that monitors messages downloaded from the TMC/RTMC or laptop computer to ensure the message will fit in the display area of the sign. Provide internal time clock that is integral to the controller to provide for message deactivation at the correct time, even if a communication loss occurs. Maintain internal clock time during power outages and automatically display the proper message if power is restored.

interfaces, and appurtenances to establish a connection to the District TMC/RTMC using a specified communications method.

Provide CMS that complies with the NTCIP 1201 v03, 1203 v03, 2101 v01.19, 2102, 2103 v02 , 2201 v01.15, 2202 v01.05, and 2301 v02 standards. Provide documentation NTCIP testing has been completed at the factory for each CMS provided by the manufacturer. Furnish CMS meeting all mandatory requirements contained in NTCIP 1203 v03 Protocol Requirements List (PRL) contained in sections 3.3.3 and 3.3.4. Provide additional conformance to the following “Optional” User Needs (UN) and Functional Requirements (FR), as described in NTCIP 1203 v03:

UN FR Description 2.3.2.1.3. N/A DMS Type: Variable Message Sign (VMS) 2.3.2.2.2. N/A DMS Technology: LED 2.3.2.3.2.1. N/A DMS Display Matrix Configuration: Full Matrix 2.4.2.2. All Mandatory Items Logged Data Exchange 2.5.1.2. All Mandatory Items Determine the Sign Display Capabilities 3.5.3.2.1 Monitor Information about the Currently Displayed Message 2.5.1.3. All Mandatory Items Manage Fonts 3.5.1.3.5 Configure a Font 3.5.1.3.6 Delete a Font 3.5.1.3.7 Validate a Font 2.5.1.4. All Mandatory Items Manage Graphics 3.5.1.4.5 Store a Graphic Definition 3.5.1.4.6 Delete a Graphic 3.5.1.4.7 Validate a Graphic 2.5.1.5. All Mandatory Items Manage Automatic Brightness 2.5.2.2. All Mandatory Items Remotely Reset the Sign Controller 2.5.2.3.3. Mandatory Define a Message 3.5.1.2.4 Delete All Messages of a Message Type with One Command 3.5.2.3.2.3 Configure Default Flash-On and Flash-Off Times 3.5.2.3.2.4 Configure Default Font 3.5.2.3.2.5 Configure Default Line Justification 3.5.2.3.2.6 Configure Default Page Justification 3.5.2.3.2.7 Configure Default Page On-Time and Page Off-Time 3.5.2.3.2.8 Configure Default Character Set H.2.2.1. Set Time 2.5.2.3.5. All Mandatory Items Schedule Messages for Display 2.5.3.1.1. Mandatory Determine Sign Error Conditions - High Level Diagnostics 3.5.3.1.1.3 Execute Climate Control Equipment Testing 2.5.3.1.2. Mandatory Monitor System Subsystem Features - Mid-Level Diagnostics 3.5.3.1.3.8 Monitor Humidity Warnings 2.5.3.1.3. All Mandatory Items Monitor Subsystem Failure Details - Low-Level Diagnostics 3.5.3.1.4.8 Monitor Sign Housing Humidity 2.5.3.1.8. All Mandatory Items Monitor Door Status 2.5.3.1.9. All Mandatory Items Monitor Controller Software Operations 2.5.3.1.10. All Mandatory Items Monitor Automatic Blanking of Sign 3.5.3.2.1. Monitor Information about the Currently Displayed Message 2.5.3.1.11. All Mandatory Items Monitor Power Source 2.5.3.1.12. All Mandatory Items Monitor Power Voltage 2.5.3.2. Mandatory Monitor the Current Message 3.5.3.2.1. Monitor Information about the Currently Displayed Message

Requirement ID Specific Requirement ID 3.6.6. Mandatory Supplemental Requirements for Message Definition 3.6.6.2.1 Support Multi-Page Messages 3.6.6.2.2 Support Page Justification 3.6.6.2.2.1 Support for One Page Justification Within a Message 3.6.6.2.2.2 Support for Multiple Page Justification Within a Message 3.6.6.2.3 Support Multiple Line Messages 3.6.6.2.4 Support Line Justification 3.6.6.2.4.1 Support for a Single Line Justification within a Message 3.6.6.2.4.2 Support Line Justification on a Page-by-Page Basis 3.6.6.2.4.3 Support Line Justification on a Line-by-Line Basis 3.6.6.2.6 Support Font Commands 3.6.6.2.6.1 Support One Font within a Message 3.6.6.2.6.2 Support One Font per Page within a Message 3.6.6.2.10 Support Flashing 3.6.6.2.10.3 Support Page-by-Page Flashing 3.6.6.2.14 Support of Graphics 3.6.13 All Mandatory Items Supplemental Requirements for Line Justification 3.6.13.1 Support Left Line Justification 3.6.13.2 Support Center Line Justification 3.6.13.3 Support Right Line Justification 3.6.13.4 Support Full Line Justification

control enclosure to house communications and power connections to the CMS. Mount enclosure on the CMS structure or on a concrete pad as indicated. The front panel of all equipment in the enclosure must be visible from at least one of the enclosure openings. Where necessary, provide a two-door enclosure to meet this criterion. The enclosure is to be used for the installation of control and communications equipment, as well as a standard duplex receptacle, convenience light, surge protection and other ancillary equipment. Provide an enclosure equipped with EIA standard 19 inch racks with fixed front frame. Provide a pull-out shelf of sufficient size to support a laptop computer. Provide all enclosure accessories powered from a power distribution panel to be furnished and installed as an integral part of the enclosure. Size the power distribution panel, circuit breaker and all power system components according to the loads required to operate the CMS. Feed the power distribution panel from the main circuit breaker. Provide a power distribution panel that has the following ratings:

• 120/240 V

• Single Phase

• Three Wire

• 10 KAIC (Symmetrical)*

• 60 A Main Lugs (Minimum)

• Four Single Pole Circuit Breaker Capacity (Minimum)

• Isolated Neutral Bus

• Ground Bus

*-Fault Duty to be confirmed with the Utility Company and increased as required

Provide power distribution panel containing the following circuit breakers. Provide single pole, 120 Volt Rated, 10 KAIC (Symmetrical) circuit breakers with the following current capacity:

• 20 A spare circuit breaker

• Circuit breaker for heating system and cooling fan according to manufacturer’s recommendations

• Circuit breaker for lamp and duplex convenience outlet according to manufacturer’s recommendations

• 20 A circuit breaker (minimum) for ITS field equipment

of 120/240 volts alternating current (VAC) protected by one 60 A, two-pole main circuit breaker for the sign and its controller. Limit subsystem operation to a voltage range of 97 VAC to 135 VAC as specified in NEMA TS4, Subsection 2.1.3.1. Supply all service lines inside the sign by 120 VAC independently protected by a thermomagnetic circuit breaker at the sign housing’s entry point. Locate all 120 VAC wiring in conduit, pull boxes, raceways, or control enclosures as required by the NEC. Prevent exposure of 120 VAC wiring inside or outside of the sign housing. Do not use the sign housing as a wiring raceway or control enclosure. Provide sign and controller with an operating frequency of 60 hertz (Hz), ±3.0 Hz, as stated in NEMA TS4, Subsection 2.1.3.2. Prevent a drop in the unit’s voltage between no- load and full-load during normal operations from exceeding 10% of the nominal voltage. Provide power protection using a thermomagnetic circuit breaker connected to a 5- milliampere GFI device that protects all service outlets. Provide a 100 A 120/240 VAC two-pole load center with mounting space for at least 20 breakers. Provide separate circuit breakers for each sign circuit. Provide power cables with insulation material fabricated specifically for damp and moist conditions. Size power cables as required by the NEC for acceptable voltage drops while supplying alternating current to the sign. Prevent sign power consumption from exceeding 7,000 VA under any circumstance, including operation of the fans, heaters (if provided within the sign), sign controllers and communication equipment, and all pixels illuminated at maximum brightness. Provide protection devices such as surge suppressors and lightning arrestors installed or incorporated in the sign subsystem by the manufacturer to guard against lightning, transient voltage surges, and induced current. Use transient voltage surge suppression devices on all electric power and data communication connections entering and exiting the CMS housing and in the CMS enclosure. Surge suppression units must meet the following criteria:

• Maximum clamp voltage: 340V;

• Peak Current: 20,000 A;

• Response Time: 5 nanoseconds;

• Occurrences: 20 times at peak current;

• Minimum Series Inductance: 200 microhenries;

• Temperature Range: -40F to +165F.

Provide surge suppression units for AC circuit configured for both normal mode (L N) and common mode (L+N G) protection. Provide Underwriters Laboratories (UL) 1449 listed surge protectors.

Provide DC and AC voltage ratings and dissipation factors of capacitors used in the sign subsystem that exceed the worst-case design parameters of the circuitry by 50%. Mechanically mount all capacitors using a clamp or fastener that is resistant to cracking, peeling, and discoloration. Provide resistors within 5% of the tolerance of the specified temperature range and, if operated in excess of 50% of its power rating, have an adequate heat sink. Provide standard type transistors, integrated circuits, and diodes that are listed by the EIA and clearly identifiable.

subsystem that is capable of powering critical components at the CMS, including all related communications equipment for a minimum of 0.5 hours. Provide sealed Absorbed Glass Mat (AGM) type batteries that are maintenance free. Install UPS within the sign housing or in the C MS enclosures o it does not obstruct regular maintenance efforts or access to indicator lights or panels.

mesh and No. 17 gage wire, to prevent the entry of serpents and rodents within the pole and enclosure.

1230.3CONSTRUCTION—Coordinate work with the Department and the proposed CMS Manufacturer

on final configuration and options. Install CMS as indicated, as shown on the Standard Drawings, and as follows:

message as outlined in PennDOT Publication 852, Chapter 3. Install CMS on structure as indicated so the structure does not interfere with the visibility requirements. Configure CMS to automatically test the operational status of each pixel in the sign once per day.

guidelines for C MS enclosures contained in Publication 647 . Properly secure all electronic equipment contained within the CMS or CMS enclosures from damage due to weather, moisture, dust, dirt, and corrosion.

Sections 951.3(a) and (b).

plate as shown on the standard drawings.

1230.4MEASUREMENT AND PAYMENT—

Includes the CMS sign, sign housing, controller, enclosure, enclosure foundation, maintainer pad, grounding, mounting, documentation, installation, training, integration, and all related equipment for a complete subsystem.

• 70% of payment will be made upon complete installation of CMS sign.

• 20% of payment will be made upon completion of the standalone acceptance tests as specified in Section 1201.3(b).

• 10% of payment will be made upon completion of the 60-day test as specified in Section 1201.3(b).

Completion of tests includes completion of training, submission of all manuals and documentation as required, and completion of all final inspections, as required by the Representative.