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O-Train Signalling


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PTC is a very broad set of requirements and not really a specific technology like CBTC. In general, PTC is just described as "a fail-safe system that only allows trains to move when permitted, and onl

As for if it means the same type of control system as currently, there is no explicit mention of CBTC or other systems, so it sounds like replacement with the same. From a bit further in the document,

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To facilitate this handover, a complete shut-down of Trillium Line service, commencing May 2020, is required to perform such things as:

  • Rehabilitation, enhancement and construction of track and drainage;

  • Rehabilitation of structures such as the Rideau River Bridge;

  • Construction of two new stations as well as performing improvements and

    upgrades to existing stations;

  • Provision of a new Signal & Train Control System;

  • Provision of new communications systems;

  • Upgrades to the Dow’s Lake tunnel;

  • Extensions to existing passing tracks [...|

As for if it means the same type of control system as currently, there is no explicit mention of CBTC or other systems, so it sounds like replacement with the same. From a bit further in the document, the Indusi system is mentioned:

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The Indusi system that supports the current operations is a safe and reliable system but since its inception, extensive technological advances have been made and will be adapted with a more modern and advanced Signal & Train Control System.

Sounds like Indusi will either be replaced or discontinued there, but it is quite vague in what they mean by "more modern".

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12 hours ago, DavidBellerive said:

As for if it means the same type of control system as currently, there is no explicit mention of CBTC or other systems, so it sounds like replacement with the same. From a bit further in the document, the Indusi system is mentioned:

Sounds like Indusi will either be replaced or discontinued there, but it is quite vague in what they mean by "more modern".

PTC is a very broad set of requirements and not really a specific technology like CBTC. In general, PTC is just described as "a fail-safe system that only allows trains to move when permitted, and only at the speed allowed". Technically, CBTC is a type of PTC!

Indusi satisfies some of the requirements of PTC, but it does not enforce speed limits and is not fail-safe. The use of plain track-side electromagnets means that the system also can't relay a lot of information to an in-cab display. You can see a comparison of other PTC systems in this report.

The Trillium Line will still used a fixed-block signalling system, but the in-cab display will be able to display more info like speed limits and the system will able to enforce those limits. We'll have to wait and see which PTC system they use, but I would be very surprised if it was straight up CBTC.

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