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Port Authority of Allegheny County (PAAC)

Microwave System Overhaul
Bus Transit Operations Radio System Overhaul


PAAC-LogoLTK Engineering Services (LTK) is assisting the Port Authority of Allegheny County (PAAC) in the complete overhaul of their radio infrastructure system. This system includes their five 10 GHz microwave links, 45 UHF P25 repeaters, 882 mobile radios, and 200 portable radios. One goal of the project is to meet the January 1, 2013 deadline for 12.5 kHz FCC Narrowbanding requirements. LTK has performed several field analyses and surveys, generated the request for proposals (RFP), and assisted in field installation for both the Microwave and Radio Replacement projects. LTK will continue to provide PAAC with system support for the duration of the project and in the future.

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Southern California Regional Rail Authority (SCRRA)

Positive Train Control 220 MHz System


SCRRA-LogoLTK is assisting the SCRRA Metrolink in the federally mandated deployment of Positive Train Control (PTC). LTK is committed to helping SCRRA deploy PTC on all of their lines by December, 2012, three years earlier than the mandated deadline.

The communications segment of PTC for SCRRA consists of: a proprietary 220 MHz packet digital radio network, a fiber/microwave redundant backhaul, a Wi-Fi 802.11 system in yards and terminals, a GPS system for location and time reference, and a commercially-based cellular modem for backup purposes. LTK has assisted in all aspects of the project for communications including on-board system technical specification development and design support. Additionally, LTK is leading the effort for the 220 MHz spectrum acquisition and will continue to support SCRRA Metrolink throughout the installation, testing and cutover of their PTC system.

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Denton County Transportation Authority (DCTA)

Positive Train Control 220 MHz System


DCTA-LogoLTK Engineering Services (LTK) is assisting the Denton County Transportation Authority (DCTA) in their complete Positive Train Control (PTC) system needs. DCTA service consists of approximately 21 miles of track running passenger service between Carrollton and Denton, Texas.

The communications segment of PTC for DCTA consists of: a proprietary 220 MHz packet digital radio network, a redundant fiber backhaul, a Wi-Fi 802.11 system in their yard and terminals, a GPS system for location and time reference, and a commercially-based cellular modem for backup purposes. LTK has assisted in all aspects of the project for communications including on-board system technical specification development and design support. Additionally, LTK has performed fitness for use testing in the 220 MHz PTC bands and is leading the effort for the 220 MHz spectrum acquisition and will continue to support DCTA throughout the installation, testing and cutover of their PTC system.

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Massachusetts Bay Transportation Authority (MBTA)

Positive Train Control 220 MHz System


MBTA-LogoLTK Engineering Services (LTK) is assisting the Massachusetts Bay Transportation Authority (MBTA) in the communications portion of their Positive Train Control (PTC) system. MBTA will be deploying a complex PTC system and LTK is providing support for all aspects of the communications segment.

The communications segment of PTC for MBTA consists of: a proprietary 220 MHz packet digital radio network, a redundant fiber/microwave backhaul, a Wi-Fi 802.11 system in yards and terminals, a GPS system for location and time reference, and a commercially-based cellular modem for backup purposes. Due to complex interoperability requirements, MBTA will be deploying a dual-equipped wayside utilizing both I-ETMS and ACSES. LTK has assisted in all aspects of the project for communications including on-board system technical specification development and design support. Additionally, LTK has performed EDX simulations of PTC 220 MHz radio coverage, will perform fitness for use testing in the 220 MHz PTC bands, and is leading the effort for the 220 MHz spectrum acquisition and will continue to support MBTA throughout the installation, testing and cutover of their PTC system.

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Sonoma-Marin Area Rail Transit (SMART)

Positive Train Control 220 MHz System

 
SMART-LogoThe SMART District is implementing a passenger rail service along an approximately 70 mile existing rail corridor. LTK is assisting SMART in system design as well as overall contract and design management and administration.

The SMART communications system provides for transporting data, voice and video to facilitate train traffic control and monitoring, PTC applications, fare collection systems, and all other present and future SMART facility communications needs. LTK has performed fitness for use testing in the 160 MHz voice bands as well as the 220 MHz PTC bands and will continue to support SMART throughout the duration of the project and is poised to provide solutions to any technical challenges that present themselves.

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New York City Transit (NYCT)

Passenger Information Systems


NYCT-LogoLTK has served NYCT in the areas of Passenger Information Systems and Infotainment systems by providing Technical Specification development, system design oversight and review, and system implementation services.

Highlights of this experience include design overview and specification writing for the Communication Systems of NYCTs R142A, R143, R160 and R188 car fleets; the R160 in particular integrated a standard passenger information system components with a fully reconfigurable LED based route map coupled with an LCD display for public information/advertisement purposes. LTK is also assisting NYCT in the development and testing of a FIND system that will allow real time wireless updates of content on the passenger displays in the R160 cars from wayside servers. LTK was also responsible for the development of NYCTs RFI 9003; which investigated the technical possibility of integrating a fully-featured modern Passenger Information System onto an older preexisting fleet of rolling stock.

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Tri-County Metropolitan Transportation District of Oregon (TriMet)

Westside/Hillsboro Project


Trimet-LogoThe LTK-designed train-to-wayside communication system has provided an integrated communications network for the entire system with capability to expand for future line additions.

The communications systems included 30 miles of new fiber optic cable, a backbone communications network based on SONET optical networking equipment, a new central monitoring and control facility, a SCADA system for automated monitoring and control of train location and system status, closed-circuit TV surveillance, an ADA-compliant public address and variable message sign system, telephones, a three-mile tunnel radio system, and a 900 MHZ radio system coordinated with the city of Portland’s regional system.

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Denver Regional Transportation District (RTD)

TREX Project


RTD-LogoThe TREX project is one of the largest multimodal projects in the country. The light rail component of this project is expanding the 15 route miles to 34 miles and increasing the existing 29 passenger stations to 42 stations. RTD’s data network needs are unique in that the agency has a requirement to integrate all new communications and information technology components into their existing enterprise network infrastructure. RTD will be the first transit agency to implement a Gigabit Ethernet backbone for LRT communications instead of a Synchronous Optical Network (SONET) system.

LTK is providing communications project management and design support for this complex and unique integration effort. The following Intelligent Transportation System (ITS) components will be integrated into the project: Variable Message Signs, CCTV, and Public Address Systems.

In addition to the Gigabit Ethernet and ITS components, LTK is also providing project management and design support for a new central control system, central control equipment room design, SCADA/RTUs for signaling, TPSS, and facilities, 2 new PBXs, an upgrade to RTD’s CAD/AVL system, and upgrades to the agency’s existing radio system.

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