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Resignalling the East Rail Line in Hong Kong: technical challenges and solutions (2017)

This paper was presented as part of the 2016-2017 Presidential Programme of Technical Papers, and was published in IRSE NEWS January 2017.

Steadily increasing demands for public transport in Hong Kong require both continuous extension of the railway network and modernisation of the signalling and control system. A brief overview of the evolution of signalling technologies in Hong Kong has already been presented by Philip Wong of MTR as part of the 20167-17 Presidential Programme.

This paper focuses on the ongoing resignalling of the East Rail line in Hong Kong. After an overview of the East Rail line and a summary of the main requirements and conditions, it presents the architecture of the new Communications Based Train Control System (CBTC), and the migration strategy that was adopted. Systems engineering and systems assurance aspects are covered throughout the paper wherever they are applicable.

The migration strategy chosen for the resignalling of the East Rail line in Hong Kong evolved so as to deliver what was promised at the outset. The complete deployment of the new signalling and control system has concentrated on the final system configuration, and the existing signalling and control system was only touched where inevitable. This strategy, which also included dual-fitting of rolling stock, helped to reduce risks arising from modification of other manufacturers’ systems, and thus to ensure reliable train operation throughout the whole migration period.

The East Rail line was commissioned in 2022 - see the following news articles:

Author(s):Andreas Steingröver (Siemens)
Keywords:re-signalling; testing; validation;
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(Click to copy the Topic URL to the clipboard) Page created: 04/01/2017
Last modified: 19/05/2022
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