GB/T 46690-2025 Technical specification for alarm information and fault grading for signal system of urban rail transit English, Anglais, Englisch, Inglés, えいご
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ICS 13.220.10
CCS H 57
National Standard of the People's Republic of China
GB/T 46690-2025
Technical specification for alarm information and fault grading for signal system of urban rail transit
城市轨道交通信号系统报警信息及故障分级技术规范
Issue date: 2025-10-31 Implementation date: 2026-05-01
Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
the Standardization Administration of the People's Republic of China
Contents
Foreword
1 Scope
2 Normative References
3 Terms and Definitions
4 Abbreviations
5 General Requirements
6 Alarm Information Requirements
7 Fault Classification Requirements
8 Validation Methods
Appendix A (Informative) Signal System Alarm Information Examples
Appendix B (Normative) Signal System Alarm Information
Appendix C (Normative) Signal System Fault Classification
References
1 Scope
This document specifies the general requirements, alarm information requirements, and fault classification requirements for urban rail transit signal systems (referred to as alarm information and faults), and describes their validation methods.
This document is applicable to the functional design, equipment use, and operational maintenance of urban rail transit signal systems based on Communication-Based Train Control (CBTC) systems.
2 Normative References
The contents of the following documents constitute indispensable provisions of this document through normative references in the text. For dated references, only the edition corresponding to that date applies. For undated references, the latest edition (including all amendments) applies.
GB/T 12758 General Technical Conditions for Urban Rail Transit Signal Systems
GB/T 32852.3 Urban Passenger Transport Terminology — Part 3: Urban Rail Transit
3 Terms and Definitions
The terms and definitions given in GB/T 12758, GB/T 32852.3, and the following apply to this document.
3.1
Fault
A state in which a system or equipment is unable to perform its required function.
Note: Excluding preventive maintenance or other planned activities, or lack of external resources.
[Source: GB/T 7826—2012, 3.3, modified]
3.2
Alarm
Visual or auditory information provided to operating personnel to indicate a fault or other abnormal event that requires a response.
Note: Alarms are divided into fault alarms and alarms for other abnormal events.
[Source: GB/T 41261—2022, 3.1.7, modified]
4 Abbreviations
The following abbreviations apply to this document.
AM: Automatic Train Operating Mode
AP: Access Point
ATC: Automatic Train Control
ATO: Automatic Train Operation
ATP: Automatic Train Protection
ATS: Automatic Train Supervision
BBU: Building Base Band Unit
CAM: Creep Automatic Mode
CBTC: Communication-Based Train Control
CM: Coded Train Operating Mode
DCS: Data Communication System
EB: Emergency Braking
ESB: Emergency Stop Button
FAM: Fully Automatic Train Operating Mode
FAO: Fully Automatic Operation
LTE: Long Term Evolution
MSS: Maintenance Supervision System
PIS: Passenger Information System
RGB: Red Green Blue
RM: Restricted Train Operating Mode
RRM: Remote Restricted Train Operating Mode
RRU: Radio Remote Unit
SPKS: Staff Protection Key Switch
TCMS: Train Control and Management System
UPS: Uninterruptible Power System
VOBC: Vehicle On-Board Controller
ZC: Zone Controller
5 General Requirements
5.1 Alarm information shall be clear, complete, and accurate in meaning.
5.2 The content of alarm information shall adopt a unified format and shall support multi-dimensional statistical analysis.
5.3 Alarm information shall reflect different levels of urgency and shall be distinguished by different alarm levels.
5.4 Based on the monitoring requirements of different positions, alarm information shall be displayed on corresponding interfaces such as maintenance supervision workstations, ATS workstations, or on-board equipment HMIs.
5.5 Fault classification shall be determined based on the impact degree of the signal system's inability to perform its required function on operational safety, train command, and train operation.
5.6 Alarm information sources shall include equipment such as ATS, on-board equipment, ZC, interlocking, DCS, maintenance supervision equipment, power supply equipment, switch machines, signals, axle counters, and track circuits.
6 Alarm Information Requirements
6.1 Alarm Information Content
6.1.1 Alarm information shall include the following:
a) Alarm description;
b) Alarm code;
