Signalling and Train Control System Requirements

The Signalling and Train Control System (S&TC) covers the entire Bhopal and Indore Metro line project, encompassing design, manufacturing, verification, supply, installation, testing, integration, and commissioning. The contractor is also responsible for providing maintenance for a specified duration.

The document outlines the general requirements for the Bhopal and Indore Metro lines, with the provisions applying equally to both systems.

This document details the functional and technical requirements of the Signalling and Train Control System, requiring consultation with other related documents.

The Design/Build Contractor is responsible for completing various stages of design, including preliminary, detailed, and final designs. They also oversee the supply, installation, testing, and commissioning of the Signalling and Train Control System.

The system includes a centralized Operation Control Centre (OCC), a Playback and Training Room (PTR), a Depot Control Centre (DCC), and a Back-up Control Centre (BCC) for each city. These centers manage the system's operations and provide redundancy.

All lines are designed for a 90-second headway and will be operated in Unattended Train Operation (UTO) Mode at the final stage, enabling automated train control.

The S&TC contractor should prioritize procuring as many items as possible from Indian sources. Refer to APPENDIX A13 for more details on indigenization.

A software tool used to track and manage requirements throughout the project lifecycle, ensuring traceability between requirements and design documents.

A specific version of a software program used for requirements management, popular in the industry.

The phase of the project where detailed design plans are finalized before implementation begins.

The process of ensuring a system meets safety and reliability standards. This can involve simulations, testing, and documentation.

Professionals responsible for assessing the reliability, availability, and maintainability (RAM) of a system.

Professionals responsible for evaluating the safety of a system, making sure it minimizes risks and meets regulatory requirements.

A level of automation in train control systems, where the train operates automatically but the driver still has control.

The management of interfaces between different systems or components, ensuring seamless communication and operation.

Areas within a depot where ATP (Automatic Train Protection) systems are not used for train control.

The system's ability to withstand electromagnetic interference (EMI) and meet specific electromagnetic compatibility (EMC) standards.

A formal document outlining measures to control electromagnetic interference (EMI) and ensure electromagnetic compatibility (EMC) within the Signalling and Train Control System.

The plan must include strategies to reduce emissions (conducted, induced, radiated) to acceptable levels as defined by international standards.

The EMC control plan should also address increasing the immunity of the Signalling and Train Control System against external interference, making it less susceptible to disruption.

The EMC control plan should analyze the potential impacts of both EMI and EMC on various system elements, including train-borne equipment, communication channels, trackside components, and the overall environment.

The Signalling and Train Control System (S&TC) must not become unsafe when a component, such as a plug-in module or card, is removed.

The probability of a failure that could lead to a dangerous situation (wrong side failure) in the entire S&TC system is extremely low, less than 1 in a billion per train operating hour.

Testing and inspections for the S&TC system are performed at least once a year to maintain its safety performance.

The S&TC system's safety is rigorously tested and demonstrated by the contractor using a specific safety assessment process.

Each function of the S&TC system is assessed for safety, and the contractor must fulfill a safety process defined in the General Specification (GS).

The primary train detection system (using software, ATP and Interlocking) and secondary train detection system (using Multi-Section Digital Axle counter) must meet the highest safety level (SIL4) in the international standard IEC 61508.

The contractor must develop a comprehensive security framework, plan and software development lifecycle (SDLC) that integrates risk management to protect data transmitted over Industrial Scientific and Medical (ISM) bands, ensuring confidentiality, availability and integrity of S&TC and wireless data.

Data transmitted over ISM bands, used by the S&TC system, is protected against malicious and unintentional manipulation.

Maintaining confidentiality, availability and integrity of data transmitted over ISM bands is essential to ensure secure and reliable operation of the S&TC system.

The S&TC contractor is responsible for incorporating cybersecurity measures throughout the software development lifecycle (SDLC) to mitigate risks and protect the system.

The average speed a train is expected to travel on the track, determining the time between trains.

The time a train spends stopped at a station, allowing passengers to board and disembark.

The maximum time allowed for a piece of equipment to respond to a command or input. This ensures the system reacts quickly and efficiently.

The central system that controls and monitors the entire train system, including all operational elements.

The time between the initiation of a command at the OCC and the actual application of the brakes by the train-borne system.

The process of starting up and preparing a train system component for operation.

A safety-critical system aboard trains, receiving instructions from the OCC and controlling train movement.

The designated area where a train must come to a complete stop at the station.

The time between the arrival and departure of two consecutive trains on a track.

A mode of train operation where trains are controlled automatically, without human intervention.