Standard No.:	GB/T 7928-2025
English Name:	General technical specification for metro vehicles
Chinese Name:	地铁车辆通用技术条件
Chinese Classification:	Q84    Urban traffic facility
Professional Classification:	GB    National Standard
ICS Classification:	45.060.20 45.060.20    Trailing stock 45.060.20
Source Content Issued by:	SAMR, SAC
Issued on:	2025-10-31
Implemented on:	2026-5-1
Status:	valid
Superseding:	GB/T 7928-2003 General technical specification for metro vehicles
Target Language:	English
File Format:	PDF
Word Count:	12000 words
Translation Price(USD):	360.0
Delivery:	via email in 1 business day

GB/T 7928-2025 General technical specification for metro vehicles 1 Scope This document specifies the technical requirements for service conditions, vehicle types, general requirements, vehicle configurations and train formation, carbody and interior equipment, bogies, braking system, electrical system, air conditioning and ventilation system, train control and management system, communication and passenger information system, electromagnetic compatibility, safety facilities, interfaces with other disciplines, test and acceptance, marking, transportation and warranty period of metro vehicles. This document is applicable to the design, manufacture and acceptance of metro vehicles with a maximum operating speed not exceeding 120 km/h. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB 146.1 Gauge for standard gauge railways - Part 1: Rolling stock gauge GB/T 1402 Railway applications - Supply voltages of traction systems GB/T 2423.17 Environmental testing - Part 2: Test methods - Test Ka: Salt mist GB/T 3449 Acoustics - Measurement of noise inside railbound vehicles GB/T 4208 Degrees of protection provided by enclosure (IP code) GB/T 5068 Axles steel for railway locomotive and wagons GB/T 5111 Acoustics - Measurement of noise emitted by railbound vehicle GB/T 10411 D.C. traction power supply system for urban rail transit GB/T 11944 Insulating glass unit GB/T 14894 Rules for inspecting and testing of urban rail transit vehicles after completion of construction GB 18045 Safety glass for railway rolling stock GB/T 21413 (all parts) Railway applications - Electric equipment for rolling stock GB/T 21563 Railway applications - Rolling stock equipment - Shock and vibration tests GB/T 24338.3 Railway applications - Electromagnetic compatibility - Part 3-1: Rolling stock - Train and complete vehicle GB/T 24338.4 Railway applications - Electromagnetic compatibility - Part 3-2: Rolling stock - Apparatus GB/T 25119 Railway applications - Electronic equipment used on rolling stock GB/T 25122.1 Railway applications - Power converters installed on board rolling stock - Part 1: Characteristics and test methods GB/T 25122.5 Railway applications - Power converters installed on board rolling stock - Part 5: Traction converter for urban rail vehicle GB/T 25123.2 Electric traction - Rotating electrical machines for rail and road vehicles - Part 2: Electronic converter-fed alternating current motors GB/T 25123.4 Electric traction - Rotating electrical machines for rail and road vehicles - Part 4: Permanent magnet synchronous electrical machines connected to an electronic converter GB/T 28029 (all parts) Electronic railway equipment - Train communication network (TCN) GB/T 28807 Railway applications - Compatibility between rolling stock and train detection systems GB/T 32350 (all parts) Railway applications - Insulation coordination GB/T 32577 Measurement procedures of magnetic field levels generated by electronic and electrical apparatus in the railway environment with respect to human exposure GB/T 33668 Code for safety evacuation of metro GB/T 34571 Railway applications - Rules for installation of cabling on rolling stock GB/T 37863.1 Railway applications - Traction electric drive system - Part 1: Urban rail vehicles GB/T 42334.1 Specification for operational safety assessment of urban rail transit - Part 1: Metro and light rail GB 50157 Code for design of metro GB 55033 Project code for engineering of urban rail transit CJJ/T 96 Standard of metro gauges CJ/T 416 Fire protection requirements for urban rail transit vehicles CJ/T 533 Technical specification for urban rail transit vehicle carbodies TB/T 449 Wheel profile for locomotive and car TB/T 1451 Front windscreen for locomotive and multiple units TB/T 1484.1 Specification for cables on board rolling stock - Part 1: Power and control cables TB/T 1804 Air conditioning for railway rolling stock - Air conditioning unit TB/T 2708 Solid forged and rolled wheels for railway - Passenger car TB/T 2879.3 Railway rolling stock - Paints and coating - Part 3: Technical specification of surface treatment of metallic and non-metallic materials TB/T 2945 Technical specifications of LZ50 steel axle and steel billet for railway vehicles TB/T 2977 Ground protection of the metal parts of railway vehicle TB/T 3138 Technical specification of flame retardant materials for railway locomotive and vehicle TB/T 3139 Limit of harmful substance of non-metallic materials and indoor air for railway locomotive and vehicle TB/T 3549.1 Strength design and test accreditation specification for rolling stock - Bogie - Part 1: Bogie frame IEC 61375-1 Electronic railway equipment - Train communication network (TCN) - Part 1: General architecture UIC 515-4 Passenger rolling stock - Trailer bogies - Running gear - Bogie frame structure strength tests UIC 615-4 Motive power units - Bogies and running gear - Bogie frame structure strength tests UIC 651 Layout of driver's cabs in locomotives, railcars, multiple unit trains and driving trailers 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 metro vehicle single vehicle that may be formed into a train for operation on metro lines 3.2 metro train assembly of several metro vehicles formed into a train and capable of carrying passengers while operating 3.3 train communication network data communication network connecting the on-board programmable electronic equipment of each vehicle within a train 3.4 train control and management system; TCMS control system that realizes the functions of train communication management, logic control, fault diagnosis, safety protection, data processing, status display, data recording, etc. 4 Service conditions 4.1 Environmental conditions Metro trains (hereinafter referred to as "trains") shall operate normally under the following environmental conditions: a) The altitude for normal operation shall not be more than 1 400m; b) The ambient temperature shall be -25°C to 45°C; c) The monthly average relative humidity of the wettest month shall not be more than 90% (with the monthly average minimum temperature of that month being 25°C); d) Vehicles shall withstand the invasion of wind, sand, rain and snow, as well as the effect of cleaning agents during vehicle washing. 4.2 Line conditions Trains shall operate normally under the following line conditions: a) The gauge shall be 1 435 mm; b) The minimum horizontal curve radius shall comply with the provisions of GB 50157; c) The minimum vertical curve radius shall be 2 000m;

Contents Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Service conditions 5 Vehicle types 6 General requirements 7 Vehicle configuration and train formation 8 Carbody and interior equipment 9 Bogie 10 Braking system 11 Electrical system 12 Air conditioning and ventilation system 13 Train control and management system 14 Communication and passenger information system 15 Electromagnetic compatibility 16 Safety facilities 17 Interfaces with other disciplines 18 Test and acceptance 19 Marking 20 Transportation and warranty period Bibliography