LTK has played a principal role in major signaling projects throughout North America. Our assignments have included signal and train control engineering for light rail and heavy rail transit, commuter rail, intercity passenger rail (including high speed rail) and freight railroads. The firm’s knowledge in signaling technology ranges from conventional relay systems to current state-of-the-art microprocessor technology, and emerging technologies such as communications-based train control (CBTC) and positive train control systems.

The firm provides clients with a comprehensive range of signal system services, including maintenance evaluations, planning and conceptual engineering, complete system engineering, development of design criteria and specifications, construction management and design review, inspection and supervision of testing, and warranty administration. LTK’s assignments have ranged from the design of a simple highway grade crossing warning installation to the planning, design engineering and testing of complete train control systems for high capacity transit operations.

LTK’s signal staff has extensive experience in all systems and subsystems associated with railroad signaling including: interlocking design, block signaling, train-to-wayside communications, automatic trip stop, and non-vital signal design. In addition, we bring a breadth of knowledge in vehicle borne and wayside signal systems used in cab signal and advanced train control systems that few rail engineering firms can match.

Some specific areas of LTK’s signaling expertise include:

  • Signaling applications in ac and dc electrified environment, including addressing critical electromagnetic interference and coordination issues
  • Review and analysis of Federal and State codes and regulations and how they are applied for specific applications
  • Experience with both standard North American and European signaling systems
  • Performance of independent maintenance evaluations
  • Preparation and implementation of training courses for transit and railroad signal departments
  • Cost evaluation appraisals and evaluations