Standard No.:	GB 21668-2025
English Name:	Safety technical specifications of vehicles for the carriage of dangerous goods
Chinese Name:	危险货物运输车辆安全技术条件
Professional Classification:	GB    National Standard
Source Content Issued by:	SAMR; SAC
Issued on:	2025-10-05
Implemented on:	2026-7-1
Status:	to be valid
Superseding:	GB 21668-2008 Provisions of vehicles for the carriage of dangerous goods with regard to their specific constructional features GB 20300-2018 Safety specifications for road transportation vehicle of explosive substance and chemical toxic substance GB 36220-2018 Safety technical requirements of oil transport tankers and refueling tankers GB 20300-2018/XG1-2020 Safety specifications for road transportation vehicle of explosive substance and chemical toxic substance (including Amendment 1)
Target Language:	English
File Format:	PDF
Word Count:	16000 words
Translation Price(USD):	480.0
Delivery:	via email in 1~3 business day

GB 21668-2025 Safety technical specifications of vehicles for the carriage of dangerous goods English, Anglais, Englisch, Inglés, えいご This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered. ICS 43.160 CCS T 59 National Standards of the People's Republic of China GB 21668-2025 Replaces GB 20300-2018, GB 21668-2008, GB 36220-2018 Safety technical specifications of vehicles for the carriage of dangerous goods Issue date: 2025⁃10⁃05 Implementation date: 2026⁃07⁃01 Issued by the State Administration for Market Regulation the Standardization Administration of the People's Republic of China Contents Foreword 1 Scope 2 Normative references 3 Terms and definitions 4 Type of vehicle 5 General safety requirements 6 Special safety requirements 7 On-board documents 8 Implementation of standards Annex A (Normative) Stowage quota sequence list Annex B (Normative) Safety signs Annex C (Normative) Installation requirements and examples of orange reflective tape, safety signs and speed limit signs on vehicles Annex D (Normative) Technical requirements and test methods for rear protective devices of atmospheric tank vehicles for transporting dangerous goods Bibliography Safety technical specifications of vehicles for the carriage of dangerous goods 1 Scope This document specifies the types of vehicles for the transport of dangerous goods and their safety technical requirements. This document is applicable to Class N vehicles, Class O semi-trailers and semi-trailer trains transporting dangerous goods. 2 Normative references The following documents contain requirements 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 1589 Limits of dimensions, axle load and masses for motor vehicles, trailers and combination vehicles GB 2893 Safety colours GB/T 3836.1 Explosive atmospheres - Part 1: Equipment-General requirements GB/T 3836.2 Explosive atmospheres - Part 2: Equipment protection by flameproof enclosures “d” GB/T 3836.3 Explosive atmospheres - Part 3: Equipment protection by increased safety “e” GB/T 3836.4 Explosive atmospheres - Part 4: Equipment protection by intrinsic safety “i” GB/T 3836.9 Explosive atmospheres - Part 9: Equipment protection by encapsulation “m” GB/T 4208 Degrees of protection provided by enclosure (IP code) GB 4351 Portable fire extinguisher GB/T 4606 Road vehicles-50 semi-trailer fifth wheel coupling pin-Basic and mounting/interchangeability dimensions GB 4715 Smoke detectors-Point detectors using scattered light, transmitted light or ionization GB/T 5008.1 Lead-acid starter batteries - Part 1: Technical conditions and methods of test GB 6944-2025 Classification and code of dangerous goods GB 8624-2012 Classification for burning behavior of building materials and products 3 Terms and definitions The following terms and definitions are applicable to this document. 3.1 dangerous goods substances and articles that possess dangerous characteristics such as explosion, flammability, poison, infection, corrosion, radioactivity, etc. During the process of packaging, consignment, transportation, loading and unloading, and storage, pose a danger to health, safety, property or environment and require special protection Note: Dangerous goods shall be subject to the substances and articles listed in GB 12268 and the National Hazardous Waste List. If it is not included, the provisions of relevant laws and administrative regulations or the results published by relevant departments of the State Council shall prevail. [Source: GB 6944-2025, 3.1.1, modified] 3.2 vehicles for the carriage of dangerous goods collective terms for dangerous goods transport freight cars and semi-trailers and semi-trailer trains designed and manufactured for transporting dangerous goods 3.2.1 motor vehicles for the carriage of dangerous goods design and manufacture of motor vehicles for carrying dangerous goods or towing semi-trailers for transporting dangerous goods 3.2.2 atmospheric tank vehicle for the carriage of dangerous goods vehicles that use a tank to hold dangerous goods. During normal transportation, the working pressure of the tank is less than 0.1 MPa (gauge pressure), and the tank is permanently connected to the shaped automobile chassis or traveling mechanism 3.2.3 pressure tank vehicle for the carriage of dangerous goods vehicles that use a mobile pressure vessel to hold dangerous goods, and the mobile pressure vessel is permanently connected to the stereotyped automobile chassis or traveling mechanism 4 Type of vehicle Dangerous goods transport vehicles are classified as EX/II-type, EX/III-type, FL-type, AT-type and CT-type. ——EX/II-type, EX/III-type vehicle: A dangerous goods transport vehicle used to transport Class 1 explosives in GB 6944-2025 and whose stowage limit meets the requirements of Annex A. ——FL-type vehicles: used for transporting flammable gases, liquids with a flash point not higher than 60°C, vehicle diesel that complies with the requirements of GB 19147 or oils listed in UN number UN 1202, and stable hydrogen peroxide or its aqueous solution (mass fraction greater than 60%) dangerous goods transport vehicles, whose cargo container has a volume greater than or equal to 1m3 Tank-type vehicle tank body, volume greater than or equal to 3m3Tank containers or removable tank cabinets. ——AT-type vehicle: a dangerous goods transport vehicle with the same cargo container as FL-type vehicle and different goods transported from FL-type vehicle. ——CT-type vehicles: not belonging to EX/II-type, EX/III-type FL-type and AT-type dangerous goods transport vehicles. 5 General safety requirements 5.1 Basic requirements 5.1.1 The outer dimensions, axle load and quality parameters of dangerous goods transport vehicles shall comply with the provisions of GB 1589. 5.1.2 The approved number of passengers in dangerous goods transport trucks should be less than or equal to 3, and no passenger seats should be set outside the cab. 5.1.3 When the cargo device of a dangerous goods transport vehicle is a closed cargo compartment, the rainproof sealing, strength and stiffness of the cargo compartment should comply with the provisions of GB 29753. Cargo fixing and fastening devices shall be installed in the cargo compartment. 5.1.4 Dangerous goods transport vehicles should be equipped with radial tires, and retreaded tires should not be used. 5.1.5 For N2-class and N3-class trucks transporting dangerous goods, all steering wheels should be equipped with emergency safety devices for tire puncture that comply with GB/T 38796. 5.1.6 For dangerous goods transport semi-trailer tractors and dangerous goods transport trucks with a total mass greater than or equal to 12,000 kg, wheels equipped with single tires should be equipped with tire pressure monitoring systems (TPMS) or devices with tire pressure monitoring functions.