1220HIGHWAY ADVISORY RADIO SUBSYSTEM

1220.1DESCRIPTION—This work is to furnish and install a Highway Advisory Radio (HAR) subsystem

with the capability to locally store and broadcast audio messages to traveling motorists from the transmitter over a programmable amplitude modulated ( AM) frequency, and to alert motorists of the message using flashing beacons and advisory sign.

1220.2MATERIAL—

National Oceanic and Atmospheric Administration’s (NOAA) weather receiver, digital recorder/playback module, digital communications controller, Global Positioning System (GPS) synchronization unit, an integrated AC/DC power supply, wood pole, mounting apparatuses, and all necessary cables, connectors and wiring to provide a fully functional HAR subsystem. Provide HAR transmitter subsystem with the capability to communicate with flashing beacon sign subsystems that alert motorists to a message being broadcast. Transmitter must be fully compatible with HAR beacon subsystem specified in Section 1220.2(h). Provide HAR subsystem that includes software and hardware to configure, operate and monitor the HAR transmitter locally in the field using a portable laptop computer and remotely using a personal computer. Furnish HAR transmitter subsystem compliant with CFR Title 47, Section 2.901 (Part 2, Subpart J); Section 68, Connection of Terminal Equipment to the Telephone Network; and Section 90.242, Travelers’ Information Stations.

demands of HAR use. Provide an FCC approved and certified traveler information station transmitter that meets the following requirements:

• Operating frequency in accordance with the FCC license application and research (530- 1700kHz inclusive)

• Class D common source amplifier

• Adjustable Radio Frequency (RF) output power up to 10 watts, nominal, using a 12-volt power supply.

• Remotely adjustable output power level

• Frequency tolerance: 100 Hz or better

• Harmonic attenuation: Greater than FCC specification of 53 dB with approved antenna subsystem

• Operating Voltage Standing Wave Ratio (VSWR): 1.5 to 1 or less

• Modulator: 20 watt bridge amplifier with transformer coupling; capable of 100% modulation up to 15 watts RF output

• Audio distortion: Less than 1.5% from 200 Hz to 3.5 kHz

• Noise level: At least 70 dB below 80% modulation level

• Automatic modulation limiter on modulation peaks above 80% including a maximum limit of 100% modulation; 12 dB overload range

• Built-in FCC compliance audio filter (-3dB at 3kHz, 18 dB/octave roll off)

• Audio Inputs: Line input adjustable from +12dBm to -20dBm; telephone input adjustable from 0dBm to -20dBm; selector switch

• Power consumption: 1.5 A at 12 volts direct current (VDC)

• Power operating range: 10 VDC to 14 VDC

• Temperature operating range: -40F to +165F

• Humidity operating range: 95% (non-condensing)

• Unbalanced RF output impedance of 50 ohms

• Transmitter power efficiency of 80% or greater

• Integrated Light Emitting Diode ( LED) indicators on the front panel of the transmitter that displays power on/off, transmit on/off, and VSWR statuses.

• Buffered from transmitter through lightning protection circuitry.

• Transmission Control Protocol (TCP)/IP capable

• FCC certified under Part 68 for dial-up operations.

• Local and remote control of all functions

• Multiple modes of operation including: Playlist, Emergency, Auxiliary (Weather Radio), Go Live, and Off

• User-definable time period up to 1,440 minutes (1 day) for the “Auxiliary” Mode, after which it must revert to the previous HAR mode. Provide module with the capability to operate in “Auxiliary” Mode for an indefinite period.

• User-definable time period for the “Go Live” mode up to 1,440 minutes (1 day), after which the subsystem must revert to the previous HAR mode. Provide module with the capability to operate in “Go Live” Mode for an indefinite period.

• Simultaneous record/playback of messages

• 999 distinct, variable length messages, 25 playlists (each with up to 100 messages), and master schedule with up to 200 events

• Message retention subsystem that does not require a battery to retain messages if main power loss occurs. Stores messages indefinitely

• Use of an external time source with an accuracy of at least 50 nanoseconds

• Capability to simultaneously launch the audio broadcast such that the audio is synchronized to other adjacent HAR transmitters. Use of “master” and “slave” HAR transmitters, where one transmitter disseminates a message to adjacent transmitters, is not acceptable.

• Programmable by day of the week, date and time

• Security code access

• 28 MIP 16-bit Digital Signal Processor (DSP) microprocessor

• Firmware programmable if new features are later added.

• Memory to support 80 minutes of messaging at 5 kHz audio bandwidth.

• Built-in voice prompts for ease of use

• Switch selectable inputs for telephone, local handset, line, and microphone; automatic reset to telephone after period of inactivity from other inputs; 4 expansion audio input channels.

• RS-232 and parallel digital interfaces

• Broadcast of messages from the NOAA weather receiver at programmable times and intervals, or on command from the control software

• Built-in local microphone for field recording of messages.

• TCP/IP capable

• Control Methods. Provide two methods of HAR control:

ͦ Dual Tone Multi -Frequency (DTMF) tones (via standard analog telephone line or digital cellular telephone) ͦ Digital commands

• Download Methods. Provide two methods of downloading messages to the HAR transmitter:

ͦ Real time audio (e.g. voice or playing recorded audio) ͦ Transfer of digitized audio files (.wav files)

• Closed Loop Control & System/Health Monitoring. Provide the following capabilities:

ͦ Verification that commands entered by the user have been successfully or unsuccessfully processed. ͦ Verification that the HAR Mode and playlist have not changed since the last connection with the HAR. ͦ Verification of the current HAR mode (Off, Playlist, Emergency, Live, Auxiliary, Weather) ͦ When updated, the HAR subsystem records a time stamp indicating the last time the HAR was updated. Each time the HAR is accessed, the HAR subsystem verifies that this recorded time stamp has not changed unexpectedly to assure the user that the subsystem has remained intact and has not been accessed by an unknown user. ͦ Seven analog instrument inputs for expansion options ͦ Audio Quality. 5 kHz bandwidth, less than 1% distortion, greater than 80 dB dynamic range ͦ Manual and automatic level control ͦ Audio Outputs. Transmitter, telephone, headphones, line, local ͦ Programming Controls. Local: handset; Remote; touch-tone keypad ͦ Instrumentation input lines with Transistor-transistor logic (TTL) Interfaces: 7 A/D channels, 8-bits,

0-2.5volt levels, 16 digital

ͦ Power consumption: 0.35 A at 12 VDC ͦ Temperature: -40F to +165F ͦ Humidity: 95% (non-condensing. ͦ The Following Operational Statuses:

- Status of Battery voltage (if battery back-up system is used or if it is solar-powered system) - Status of AC Power vs. DC Power operation - Current HAR mode (Off, Playlist, Emergency, Live, Auxiliary) - Absence of Broadcast (from a silence sensor)

- Audio Broadcast (demodulated broadcast available when remotely accessed by an operator or computer through an analog telephone line)

ͦ Upon detection of a fault condition for any of the above parameters, the HAR must send notifications to the TMC/RTMC using the following methods:

- To the Central Software Subsystem - By e-mail notification - By pager notification - By telephone notification (to landline or digital cellular telephones)

information directly from the National Weather Service (NWS). Include all seven selectable frequency bands, including split channels. Include a built -in speaker and headphone jack for monitoring weather information on site. Provide unit that works in conjunction with the digital recorder/player to automatically interrupt the current message being broadcast upon receipt of an emergency alert from the NWS. Provide Alert feature (on/off) as well as the feature to set the duration for broadcasting the alert that is selectable from within the digital recorder/player’s voice prompts. Provide weather receiver with the following characteristics:

• Frequency: seven selectable frequencies; selectable through a series of dip switches; Internal speaker and headphone jack.

• Sensitivity: Better than 0.2µV; S/N better than 12 dB

• Selectivity: ±10 KHz at -6Db; ±20 KHz at -70 Db

• Weather Alert: Detects 1050 Hz tone; LED & TTL outputs.

• Antenna: External 50Ω BNC connector

• Power Input: less than 0.4 A at 12 VDC

• Operating Temperature: -40F to +165F; Humidity 95% (non-condensing)

• TCP/IP capable

synchronize radio frequency signals broadcast by multiple HAR transmitter units. Provide unit to tune the operating frequency of the transmitter to a high precision using phase locking to timing signals received from GPS satellites. Display power, GPS reception quality, satellite lock, and HAR transmitter frequency lock indicators on the front panel display of the unit. Size GPS unit to fit in the rack or chassis included in the ITS enclosure specified in Section 1201.2(b). Provide fi eld hardened unit with ambient operating temperature range of - 40F to +165F.

Where no manufacturer recommendations exist, utilize Section 1101.11(j). Obtain Representative approval before installing grounding system.

manufacturer’s recommendations. Furnish minimum 30-foot pole height.

sign equipped with dual flashing beacons that are activated upon the broadcast of a radio message from nearby HAR Transmitters. A HAR Beacon subsystem is comprised flashing beacon unit, reflective advisory sign, foundation, structure, breakaway system, complete power subsystem (via solar power or power point of

service), flashing beacons, field enclosures, an integrated AC/DC power supply, battery backup subsystem, and all necessary cables, connectors and wiring to provide a fully functional HAR beacon subsystem. Provide HAR beacon subsystem with flashing beacons that activate at preset flashing intervals when a message is broadcast from a nearby transmitter. Provide compatibility to fully control beacons with existing central control software used to control HAR transmitter. Where no software exists at the TMC/RTMC, provide software as specified herein.

per each signal head not exceeding 15 Watts. Provide LED rated for 100,000 hours of continuous operation, in the operating temperature range of -31F to +167F. Wire individual LEDs in at least six parallel groupings of equal quantity, such that the failure of a single LED will at most deactivate only its grouping. Arrange individual LEDs in concentric circles, with denser packing towards the center, to represent a typical incandescent signal more closely. Provide ultraviolet (UV) stabilized polycarbonate signal heads to withstand direct sunlight exposure for a minimum of 5 years without exhibiting evidence of deterioration. Coordinate with the LED signal head manufacturer to select the wavelengths of the LED to maximize visibility of the LED signal heads. Furnish one NEMA -Rated dual circuit flasher along with an additional seven position terminal strip, barrier type rated at 20 A, 600 V RMS minimum, to support wire connections to second signal head and to flasher control circuitry. Provide a similar three position terminal strip in the signal head. Provide interface to enable capability to activate, control, and monitor the HAR beacons via a communication method specified. Furnish beacon mounting hardware constructed of stainless steel. Fabricate brackets of aluminum alloy ASTM B221, Alloy 6061- T6 or equal with a load concentrating boss of stainless steel ASTM A582, type 416 or equal. Fabricate coupling bolt of ASTM A325 galvanized in accordance with ASTM A153. Fabricate couplings of alloy steel AISI-4130H or 4340H and capable of withstanding a minimum tensile force of 47 KIPS. Provide adequate insulation between dissimilar metals to minimize the possibility of galvan ic reactions. Provide secure connections between the LED beacons and sign supports in accordance with the manufacturer’s recommendations.

a bottom section, each with border and legend. Color background of top section high-intensity, reflectorized yellow, and color legend and border of non- reflectorized black. Provide the top section with legend that reads “TRAFFIC ADVISORY WHEN FLASHING.” Color background of bottom section reflectorized blue, and legend and border of reflectorized white. Provide the bottom section (advisory sign frequency panel) with legend of “HIGHWAY INFO TUNE RADIO TO XXXX AM”. Ut ilize AM frequency identified by Representative, and as approved by the FCC permit. Verify the station frequency and sign text before finalizing sign. Provide sign with 1 1/4 inch border with 6 inch corner radii. Use Series E letters and numbers for all legends. Provide separate frequency panel sized only to display the licensed AM radio frequency. Fabricate frequency panel of the same material as the advisory sign.

complete power management subsystem for the HAR flashing beacons in accordance with Section 1201.2(e).

5.a Solar Installations. For solar panel powered installations, provide photovoltaic, single crystal silicon solar panel modules and battery bank subsystem to operate the flashing beacons continuously at full power for a minimum of 8 consecutive hours without solar array exposure to sunlight. Provide solar panel array that is compliant with International Electrotechnical Commission’s (IEC) 61215 standard. Provide subsystem with DC output power is nominal 13.6 V direct current at 5 A, with maximum 15 VDC and maximum 10 A. Provide maintenance-free 12 volt gel batteries that are rated at a minimum of 180 A- hours, and are deep cycle. Furnish trickle charger to charge batteries for use. Furnish beacon and solar panel mounting hardware constructed of stainless steel. Fabricate brackets of aluminum alloy ASTM B221, Alloy 6061-T6 or equal with a load concentrating boss of stainless

steel ASTM A582, type 416 or equal. Fabricate coupling bolt of ASTM A325 galvanized in accordance with ASTM A153. Fabricate couplings of alloy steel AISI -4130H or 4340H and capable of withstanding a minimum tensile force of 47 kips. Provide adequate insulation between dissimilar metals to minimize the possibility of galvanic reactions. Provide NEMA 3R rated enclosure to house battery bank. Provide NEMA rated enclosure that prevents water ingress during operation. Utilize rigid galvanized steel conduit to house all wires between the solar array, battery bank and ITS enclosure. Furnish a N EMA enclosure that completely contains any spills from damaged or malfunctioning batteries.

5.b Hard-Wire Installations. Section 954.3(f),

with existing software utilized to remotely control the HAR subsystem. Provide integration of HAR subsystem and all components into existing software. Provide full remote monitoring capabilities of HAR transmitters, including the operational status of all equipment as defined in Sections 1220.2(a) 1220.2(b) and 1220.2(c). Provide synchronization of broadcasted messages among multiple HAR transmitter stations as needed based on proximity to other HAR transmitters. Provide control, operation, and monitoring of all HAR beacons specified in Section 1220.2(h). Provide capability to associate individual HAR beacons with the HAR transmitter location within the software.

1220.3CONSTRUCTION—

per the manufacturer’s recommendations. Install control software or integrate into existing software on PCs, Laptop computers and network servers as identified by the Representative. Install software and hardware in the TMC/RTMC without disturbing TMC/RTMC operations. No down time will be allowed of any TMC/RTMC workstation, unless otherwise indicated by the Representative.

manufacturer’s recommendations. Integrate beacons into control software at the TMC/RTMC. Integrate into software on all PCs, laptop computers and network servers that already contain the central control software. Integrate beacons at the TMC/RTMC without disturbing TMC/RTMC operations. Configure the two circuits in the dual circuit flasher to flash alternately, at intervals between 50 flashes per minute and 60 flashes per minute, upon activation.

performance, in accordance with the recommendation of the solar panel manufacturer. Mount solar panels on steel post that is farthest from trees and trim/remove trees to su bject solar array direct sunlight for 75% of the day. Provide mounting capable of swiveling, tilting, and re- angling the cells in order to optimize exposure to solar rays. Include capability to lock the solar panels at any angle necessary to optimize solar exposure.

on the support that is farthest from the roadway.

indicates the AM radio frequency. Fasten frequency panel to advisory sign in a manner such that it is easily removable and changeable.

pole using secure connections.

transmitter at each deployment site, at the frequency band specified or as directed by the Representative. These services include all preparations necessary to complete all required application forms, and coordination to make certain that all parts of the HAR subsystem comply with existing FCC rules. All related FCC fees are incidental to the cost of this item.

no manufacturer recommendations exist, utilize Section 910.3(q). Obtain Representative approval of grounding system before installation. Terminate the core conductor of the antenna cable at a transient voltage surge suppressor in the related enclosure, before further connections to the transmitter or any electronic device in the enclosure. Ground the surge suppressor to the adjacent grounding electrode system. Terminate the shield (metallic armor) of the antenna cable to the grounding electrode system of the antenna pole. Provide this grounding to the part of the antenna cable near the base of the related pole, outside the related transmitter enclosure.

1220.4MEASUREMENT AND PAYMENT—

Includes transmitter, weather receiver, digital recorder/playback module, wires, connectors, permit acquisition, grounding, installation, mounting, documentation, FCC permits and licenses, integration, training, and work for a complete HAR transmitter subsystem.

• 50% of payment will be made upon complete installation of HAR pole and transmitter equipment.

• 30% of payment will be made upon completion of the standalone acceptance tests as specified in Section 1201.3(b).

• 20% 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 herein, and in the Contract, and completion of all final inspections, as required by the Representative.

Includes beacons, connections, wiring, cabling, grounding, mounting, installation, integration, training, and related equipment to provide a fully functional subsystem.

• 50% of payment will be made upon complete installation of HAR beacon equipment,

• 30% of payment will be made upon completion of the standalone acceptance tests as described in Section 1201.3(b).

• 20% 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 herein, and in the Contract, and final inspections as required by the Representative.

Includes wiring, cabling, installation, and integration.

For the type indicated. Includes mounting equipment used to mount transmitter and related transmitter cables and equipment.