Signaling

We are an innovative leader in implementing state of the art signaling and train control systems, including communications based train control, PTC as well as conventional and microprocessor based signal systems that have open, resilient, and reliable architectures including fiber optic vital signal networks and digital high speed wireless communications for ATCS Data Radio, CBTC and PTC.  Our engineering experience includes Rail Signal Systems, Communications Based Train Control/PTC, Systems Integration, and Construction Management.

  • Compliance with FRA Rules, federal and state codes and standards
  • Development of signal operational descriptions specific to transit agency required operational functionality
  • Development of route/aspect charts
  • Design/Construction for Insulated joint and signal placement, impedance bonds, block signaling, interlockings
  • Track to Wayside (TWC) loop layout and design
  • Train Speeds and Signage
  • ABS/Dark Territory, Traffic Signal interfaces
  • Grade Crossing interfaces with street traffic controllers, static signage requirements, bike lanes
  • Grade Crossing timing, coordination and dynamic signage/traffic lights
  • ATCS Data Radio
  • Vital and Non-Vital Networks
  • Fiber Optic Networks
  • Non-Vital signals design
  • Wiring details, voltage drop, wire/conductor sizing, power, signals, communications
  • Signal software/centralized traffic control/management, HMI development
  • Control Centers
  • Traffic Signaling Networks & Controllers
  • Traffic Signal Controller Interfaces
  • Wayside Crossing Horns, Signals and Communications Integration
  • Wireless communications, CBTC/PTC Radio Systems
  • Towers, masts, radio design
  • Fiber optic trunk networks
  • Point to Point Microwave trunk networks
  • Beacon/tagging RFID systems
  • Wayside and vehicle borne equipment
  • ATP/ATO/ATC/ATS train control systems
  • Fully automated driverless control systems
  • GPS positioning systems
  • Traction Power track bonding and negative returns – coordination
  • Combined system ductbank, conduits, manholes/vaults coordination
  • Speed limit sign placement, trackwork alignment design speeds
  • Track signage, grade crossing signage per MUTCD manual
  • Site Inspections
  • Verification of FRA rules compliance for installed systems
  • Response to RFIs, Submittals, Contractor Design Review
  • Resident Engineers, Contract Administration
  • Construction Safety Certification

Featured Projects

Caltrain Commuter Railroad (77 miles), San Francisco-Gilroy, Peninsula Corridor Joint Powers Board 25+ Projects: LA completed work on more than 25 design and construction management projects, including communications master plan, wireless master plan/PTC integration with California High Speed Rail, provided stakeholder meeting facilitation support, interviewed project stakeholders, and prepared strategic and master plans for improvements, centralized traffic control upgrade and CAD/AVL evaluation, preliminary station communications upgrades including public address (PA), variable message signs (VMS), CCTV at 34 stations; station CCTV at 4 stations and CCTV at 4th/King San Francisco and Diridon yards (142 cameras), CEMOF San Jose yard facility CCTV (O&M Facility, 5 buildings & yard), 6 station CCTV system, Diridon Station Infrared Audible (Talking) Sign System, WiMax Passenger Internet design and RFP preparation, integrated PA/VMS messaging system, Communications upgrades for Burlingame, California Ave, Palo Alto, Broadway, Atherton including PA, VMS, LAN/WAN, Translink CID, TVM, and provisions for future CCTV; Translink/CID fare collection site preparation project for 34 stations, PA site/sound quality survey 21 stations, Public Address System design for 23 stations, Caltrain radio narrowband upgrade, Digicon Centralized Traffic Control software replacement, Police Substation CCTV system, North/South CTX ATCS 900 MHz data radio system 19 40-80 ft. towers, Peoplesoft software design/development/implementation, business process improvement evaluation/analysis.

Caltrain Commuter Railroad (77 miles), San Francisco-Gilroy, Peninsula Corridor Joint Powers Board 25+ Projects

Tasman East/Capitol-Hostettor Light Rail System, Valley Transportation Authority, San Jose CA -- Provided design and construction management services, resident engineers, inspectors, contract administration. Our work included systems and civil elements (communications, fare collection, integration with substations, overhead contact system, signaling, track, stations, maintenance facility, and control center), for this 4 station, 3.3 mile extension, from Hostetter Road to Alum Rock Station.

Tasman East/Capitol Light Rail System, San Jose, Santa Clara VTA

Tasman East Light Rail System, San Jose, Santa Clara VTA: Provided design and construction management services, resident engineers, inspectors, contract administration. Our work included systems and civil subsystems (communications, fare collection, integration with substations, overhead contact system, signaling, track, stations, maintenance facility, and control center), for this 6 station, 4.9 mile extension, from the Baypointe Transfer Station to Hostetter Road. The project includes 1.4 miles of elevated guideway.

Tasman East Light Rail System, San Jose, Santa Clara VTA

San Diego Trolley Blue/Orange Light Rail Lines, Metropolitan Transportation Development Board: Responsible for design of communications systems, passenger information systems and signaling interfaces, for the Blue and Orange Light Rail Lines, which includes 35 passenger stations.

San Diego Trolley Blue/Orange Light Rail Lines, Metropolitan Transportation Development Board

Transit Projects ►