GB/T 25340-2026Technical specification for the automatic equipment identification of railway rolling stock (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part

1.Structure and Drafting Rules of Standardization Documents". Drafting. This document supersedes GB/T 25340-2010 "Technical Conditions for Automatic Identification Equipment for Railway Locomotives and Rolling Stock" and is consistent with GB/T 25340-2010. Compared to previous versions, aside from structural adjustments and editorial changes, the main technical changes are as follows:

a) Added terms and definitions (see Chapter 3);

b) Added abbreviations (see Chapter 4);

c) The basic structure and functions of centralized data management, monitoring, and replication equipment have been removed (see sections

3.5 of the.2010 version);

d) Added support for wireless writing of electronic tags (see 5.2.1);

e) The requirement for ground-based automatic identification equipment to upload ground information to the locomotive's electronic tag has been removed (see

3.3 in the.2010 version);

f) Increased the protection level of the electronic tag casing, and the requirements for shock and vibration (see 6.2.2, 6.2.3);

g) Added technical requirements for electronic tags to adapt to vehicle speed (see 6.2.7);

h) The ambient temperature requirements for Automatic Identification System (AIS) ground-based devices have been changed (see 7.1,

4.1 of the.2010 edition);

i) Increased environmental humidity requirements for ground-based automatic identification equipment (see 7.1);

1 Scope

GB/T 25340-2026 is the Chinese national standard covering the tag under every Chinese wagon and locomotive and the trackside readers that record it - the system by which a railway knows which vehicle passed which point, at speed and in any weather. It replaces GB/T 25340-2010 and has been in force since 1 October 2026, under the National Railway Administration. It was issued on 31 March 2026 and takes effect on 1 October 2026, replacing GB/T 25340-2010. This page is published from the official record of the 2026 edition; the clause text of a standard this recent is not yet in circulation, and the figures, limits and tables it contains are those of the document itself, delivered in full with the English translation.

This document specifies the basic structure and functions of Automatic Identification (AII) equipment for railway locomotives and rolling stock, the classification and technical requirements of electronic tags, and the AEI design. Technical requirements for equipment, label programming equipment, and installation requirements. This document applies to the design, manufacture, and inspection of automatic identification equipment for railway locomotives, passenger cars, freight cars, and EMU trains.

4.Abbreviations The following abbreviations apply to this document.

5 Basic Components and Functions

5.1 Basic Components Automatic identification equipment for locomotives and rolling stock shall consist of the following components.

a) Electronic tags;

b) AEI equipment, including train detection modules, antennas, microwave radio frequency modules, readout modules, and low-speed detection modules, etc.;

c) Tag programming device.

8 Technical Requirements for Tag Programming Equipment

8.1 The on-board tag programming equipment for locomotives shall comply with the provisions of TB/T 3574, and the on-board tag programming equipment for EMUs shall comply with GB/T 25119. According to the regulations.

8.2 Locomotive and EMU onboard tag programming equipment shall adopt safety measures such as power isolation and communication interface isolation.

9 Installation Requirements

9.1 Electronic Tag Installation The installation of electronic tags shall comply with the following regulations.

a) Facing downwards towards the line;

b) The electronic tag and mounting plate are installed in a safe location on the underside of the locomotive or rolling stock, and there should be no metal obstructions within the identification area. The installation requirements for the label recognition area should comply with the specifications in Figure 3;

c) The longer direction of the electronic tag should be perpendicular to the longitudinal direction of the locomotive or rolling stock, with an allowable deviation of ±5°;

d) The electronic tag is installed on the longitudinal centerline of the vehicle body, with an allowable deviation of ±30mm;

e) The height difference between the front of the electronic tag and the top surface of the rail should be greater than 0.6m and not less than 0.33m;

f) The front of the electronic tag should be parallel to the horizontal plane of the vehicle body, with an allowable deviation of ±5°;

g) Electronic tags should not be installed on the transverse centerline of the vehicle body; they should preferably be installed near one end of the locomotive or rolling stock. Electronic tags of the same model should be installed on... The installation location should be fixed.

h) The net distance between the electronic tag installation location and the coupler end face should not be less than 1.2m. The unit is millimeters.

a) Vertical longitudinal side view of the vehicle body

b) Longitudinal front view of the vehicle body

9.2 AEI Equipment Installation The installation of AEI equipment shall comply with the following regulations.

a) The length of the radio frequency cable between the microwave radio frequency device and the antenna should not exceed 30m.

b) The distance between different antennas is greater than 10m.