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PD CLC TS 50459 โ Railway ERTMS/ETCS/GSM-R Driver-Machine Interface Technical Specification Series
Railway Applications โ European Rail Traffic Management System โ Driver-Machine Interface
๐ PD CLC TS 50459 is the British Standards Institution (BSI) Published Document implementing the European Committee for Electrotechnical Standardization (CENELEC) technical specification CLC/TS 50459, addressing the driver-machine interface (DMI) of the European Rail Traffic Management System (ERTMS). Prepared by Subcommittee GEL/9/1 “Railway Electrotechnical Applications โ Signalling and communications” under the UK technical committee GEL/9, it is classified under ICS 03.220.30 (rail transport), 13.180 (ergonomics), and 35.240.60 (IT applications in transport), superseding the withdrawn DD CLC/TS 50459 series. It provides unified ergonomic specifications for the presentation and layout of ERTMS/ETCS/GSM-R information in the driver’s cab.
๐ก ERTMS is the core system for European railway interoperability, and its driver-machine interface (DMI) is the key screen through which the driver receives ETCS train-protection information and GSM-R radio-communication information. Unified presentation principles and layouts are essential for cross-network safety and consistent driver operation.
1. Series Structure and Overall Framework ๐
The PD CLC TS 50459 series consists of 3 parts, corresponding respectively to general principles for presenting ERTMS/ETCS/GSM-R information, ergonomic arrangements of GSM-R information, and ergonomic arrangements of non-ETCS information.
| Part | Year | Title | Core Content |
|---|---|---|---|
| PD CLC/TS 50459-1 | 2015 | General principles for the presentation of ERTMS/ETCS/GSM-R information | Specifies general presentation and ergonomic requirements for ERTMS/ETCS/GSM-R information in the cab |
| PD CLC/TS 50459-2 | 2015 | Ergonomic arrangements of GSM-R information | Specifies the layout and presentation of GSM-R radio-communication information on cab displays |
| PD CLC/TS 50459-3 | 2016 | Ergonomic arrangements of non-ETCS information | Specifies the layout and presentation of non-ETCS information (e.g., conventional signalling, train status) |
โ ๏ธ A CLC/TS is a provisional Technical Specification. Always reference the current BSI version and consider its linkage with ERTMS/ETCS system requirements (e.g., the ETCS system requirements and Subset series).
2. General Presentation Principles: Part 1 Ergonomic Requirements ๐งญ
Part 1 specifies the general principles for presenting ERTMS/ETCS/GSM-R information on cab displays, laying the ergonomic foundation for the whole series:
- Information classification and priority: distinguish protection, alarm, status, and prompt information and define their display priority.
- Colour and coding: unify colour codes (red, yellow, green, white, blue, etc.) for information categories, following railway conventions.
- Display area partition: define the functional areas of the DMI display so critical information stays in the driver’s field of view.
- Operation and feedback: specify visual/auditory feedback after driver operations for clear information interaction.
Part 1 stresses that the display must reduce driver cognitive load and ensure that information remains legible, distinguishable, and unambiguous under varying lighting, vibration, and operating conditions.
3. GSM-R Information Layout: Part 2 Specification ๐
Part 2 specifies the ergonomic layout of GSM-R radio-communication information on cab displays. GSM-R is the railway-dedicated mobile communication system, and its information (calls, messages, registration status) must be clearly presented on the DMI:
| Interface Element | Description |
|---|---|
| Communication status | Display GSM-R registration, connection, and call status to inform the driver of communication availability |
| Call information | Display incoming/outgoing numbers, call type, and call state |
| Short messages | Display GSM-R short-message content and send/receive status |
| Operational functions | Specify the functional layout for driver operations such as calling, hanging up, and selection via the DMI |
Part 2 ensures that GSM-R communication information is clear during driver operation without interfering with the display of ETCS protection information.
4. Non-ETCS Information Layout: Part 3 Specification ๐๏ธ
Part 3 specifies the layout of non-ETCS information (e.g., conventional signalling, train status, diagnostic information) on cab displays. Non-ETCS information coexists with ETCS protection information and must be presented in a coordinated manner:
| Interface Element | Description |
|---|---|
| Conventional signalling information | Display line signals, points, and route status as non-ETCS information |
| Train status information | Display speed, traction, braking, door, and other status information |
| Diagnostics and alarms | Display system diagnostics and alarms to support driver and maintenance decisions |
| Layout coordination | Specify the coordination and priority between non-ETCS and ETCS information |
โ
The three parts form a complete specification for the ERTMS driver-machine interface: Part 1 sets presentation principles, Part 2 the GSM-R layout, and Part 3 the non-ETCS layout, together ensuring consistent and safe cab display.
5. Engineering Practice and Application Notes ๐ ๏ธ
- ๐ DMI design: design cab displays per the Part 1 general principles and Part 2/3 layout specifications to keep information legible and distinguishable.
- ๐ง Ergonomic verification: use usability and ergonomics evaluation to verify correct driver recognition and response under real operating conditions.
- ๐ Cross-network consistency: unify DMI presentation principles to maintain consistent driver operation across countries and train types.
- ๐ Alignment with ETCS system requirements: coordinate the interface specification with ETCS system requirements and the Subset series to meet ERTMS interoperability.
6. Frequently Asked Questions โ
โ Q: What is the ERTMS driver-machine interface (DMI)?
A: The DMI is the human-machine interface in the cab that displays ERTMS/ETCS train-protection information and GSM-R communication information and accepts driver operations โ a key component of railway operational safety.
A: The DMI is the human-machine interface in the cab that displays ERTMS/ETCS train-protection information and GSM-R communication information and accepts driver operations โ a key component of railway operational safety.
โ Q: Why standardise DMI presentation principles?
A: Unified presentation principles ensure drivers see consistent information across countries and train types, reducing misreading risk and improving cross-network safety and efficiency.
A: Unified presentation principles ensure drivers see consistent information across countries and train types, reducing misreading risk and improving cross-network safety and efficiency.
โ Q: How do Parts 2 and 3 differ?
A: Part 2 specifies the layout of GSM-R communication information; Part 3 specifies the layout of non-ETCS information (e.g., conventional signalling, train status); both work with the Part 1 general principles.
A: Part 2 specifies the layout of GSM-R communication information; Part 3 specifies the layout of non-ETCS information (e.g., conventional signalling, train status); both work with the Part 1 general principles.
๐ Q: Why is this series published as a Technical Specification (TS)?
A: Because it is a CENELEC technical specification providing ergonomic requirements for railway signalling and vehicle design, subject to evaluation before promotion to a European Standard.
A: Because it is a CENELEC technical specification providing ergonomic requirements for railway signalling and vehicle design, subject to evaluation before promotion to a European Standard.