GB/T 46690-2025Technical specification for alarm information and fault grading of urban rail transit signalling systems (English PDF)
城市轨道交通信号系统报警信息及故障分级技术规范
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
October 31, 2025
Implementation date
February 1, 2026
Scope
GB/T 46690-2025 is the English-translated version of 城市轨道交通信号系统报警信息及故障分级技术规范.
GB/T 46690-2025 is the Chinese standard "Technical specification for alarm information and fault grading of urban rail transit signalling systems". Its scope clause reads: This document specifies alarm information (hereinafter referred to as alarm) and fault information (hereinafter referred to as fault) of urban rail transit signaling system.
The document outlines the overall requirements for fault classification, alarm information requirements, and fault classification requirements, and describes its verification method.
This document applies to the functional design, equipment use, and operation of urban rail transit signaling systems based on communication-based train operation control systems.
Maintenance is required. Its clauses include terms and definitions; abbreviations.
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Document preview — GB/T 46690-2025
National Standard of the People's Republic of China
- ICS
- 03.220.30
- Classification
- R 11
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Preface
- 1.Scope
- 2 Normative References
- 3.Terms and Definitions
- 4.Abbreviations
- 5.General Requirements
- 6.Alarm Information Requirements
- 7.Fault Classification Requirements 6.
- 8.Verification Methods 6.
- Appendix A (Informative) Example of Alarm Messages from Signal Systems
- Appendix B (Normative) Alarm Information for Signal Systems
- Appendix C (Normative) Signal System Fault Classification
- References
1 Scope
This document specifies alarm information (hereinafter referred to as alarm) and fault information (hereinafter referred to as fault) of urban rail transit signaling system.
The document outlines the overall requirements for fault classification, alarm information requirements, and fault classification requirements, and describes its verification method.
This document applies to the functional design, equipment use, and operation of urban rail transit signaling systems based on communication-based train operation control systems.
Maintenance is required.
2 Normative references
The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.
For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.
This document.
GB/T 12758 General Technical Requirements for Signaling Systems in Urban Rail Transit
GB/T 32852.3 Urban Passenger Transport Terminology Part 3.Urban Rail Transit
3 Terms and Definitions
The terms and definitions defined in GB/T 12758 and GB/T 32852.3, as well as the following terms and definitions, apply to this document.
3.1 fault
The system or device is unable to perform its intended function.
Note. This excludes preventative maintenance or other planned activities, or situations where external resources are unavailable.
[Source. GB/T 7826-2012, 3.3, with modifications]
3.2 alarm
Provide visual or auditory information to operators that requires a response to a fault or other abnormal event.
Note. Alarms are divided into fault alarms and other abnormal event alarms.
[Source. GB/T 41261-2022, 3.1.7, with modifications]
4 Abbreviations
The following abbreviations apply to this document.
AP. Wireless Access Point
GB/T 45098 | GB/T 41920 | GB/T 22485 | GB/T 46689 | GB/T 46688 | […]
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 51 pages — is available in the English PDF.
Referenced standards
Normative references
Editions of GB/T 46690
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 46690-2025 | Technical specification for alarm information and fault grading for signal system of urban rail transit | current edition | Current |
This page sells the current edition, GB/T 46690-2025. Earlier editions are listed for reference only.
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Related Standards
GB/T 12758-2023 — General specification of signal system for urban rail transit
GB/T 32852.3-2024 — Urban passenger transportation vocabulary - Part 3: Urban rail transit
GB/T 7251.4-2026 — Low-voltage switchgear and controlgear assemblies - Part 4: Particular requirements for assemblies for construction sites (ACS)
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