Signalling Design Production

NTTX provides IRSE licensed signalling design resource with London Underground asset competency.

We offer turnkey solutions to ensure works involving signalling modifications or new works are progressed and controlled. In that way, our clients can be confident their projects will achieve completion as expected.

NTTX carries out all its design using licensed designers with the following licence categories:

• Signal Design Production – 1.1.150C
• Signal Design Checking – 1.1.150C and 1.1.160
• Signal Design Approvals – 1.1.150C and 1.1.160
• London Underground CAT ‘S’ Approvals
• Signal Scheme Designs – 1.1.150A

We provide a complete solution, or a combination of solutions, including:

• high level scheme designs
• provide and give guidance on site verification (wire-counts and correlation) strategies
• fully prepared, checked and approved designs with London Underground CAT ‘S’
• automatic signalling
• controlled signalling – simple and complex junctions
• overlap calculations for safe train operation
• journey time analysis – headway calculations
• pre- and post-commissioning support.

Our designers work on a variety of systems, including:

• London Underground assets – mechanical interlockings to CBI Systems
• various ATP, ATO and ATC systems
• CBTC – Thales-based CBI system
• Westrace and DTG (Distance-to-Go) – Invensys.