GB 21668-2025Safety technical specifications of vehicles for the carriage of dangerous goods (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 20300-2018 "Safety Technical Conditions for Road Transport Vehicles Carrying Explosives and Highly Toxic Chemicals" and GB 21668-2008. The structural requirements for vehicles transporting dangerous goods, GB 36220-2018 "Safety Technical Conditions for Oil Tankers and Refueling Vehicles", and GB 20300- Compared with GB.2018, GB 21668-2008, and GB 36220-2018, the main technical changes are as follows, apart from structural adjustments and editorial modifications.

---The term "dangerous goods" and its definition have been changed (see 3.1, GB 21668-2008 3.1);

---The terms "explosives" and "canister volume" and their definitions have been removed (see sections

3.3 of GB 20300-2018);

---The terms "residual fuel level," "tire blowout emergency safety device," and "rollover prevention control system" and their definitions have been removed (see GB 36220-2018). Chapter 3);

---Added the terms "dangerous goods transport vehicle", "dangerous goods transport truck", "atmospheric pressure tank type dangerous goods transport vehicle", and "pressure tank". "Dangering Goods Transport Vehicles", "Medical Waste", "Light Fuel", "Temperature Control", "Volume", "Combustion Heater", "Dangering Goods Vehicles" "Signs", "Safety signs", "Electrically controlled vehicle stability control system" and their definitions (see 3.2, 3.4~3.11);

---The term "highly toxic chemicals" and its definition have been changed (see 3.3,

3.2 of GB 20300-2018);

---The classification of vehicles transporting dangerous goods has been changed (see Chapter 4, 3.2~

3.6 of GB 21668-2008);

---The loading weight and tank volume restrictions for vans transporting highly toxic chemicals, explosive substances, and materials have been removed (see [link]). GB 20300-2018, sections

4.2.4.2 and 4.2.5, and Amendment No. 1);

---The requirements for the installation of cargo securing devices have been changed [see 5.1.3, 6.1.6g),

1 Scope

GB 21668-2025 is the Chinese national standard on safety technical specifications of vehicles for the carriage of dangerous goods, in the field of road vehicles engineering. It carries no /T suffix, which in the Chinese system means compliance is mandatory: a product or a practice within its scope has to meet it to be lawfully made, sold or carried out in China. It was issued on 5 October 2025 by the State Administration for Market Regulation; Standardization Administration of China, and has been in force since 1 July 2026. Classification: ICS 43.160, CCS T 59.

This document specifies the types of vehicles used for transporting dangerous goods and their safety technical requirements. This document applies to N-class vehicles, O-class semi-trailers, and semi-trailer truck trains transporting dangerous goods.

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 1589 Limits for the overall dimensions, axle load and mass of automobiles, trailers and automobile combinations GB 2893 Safety Colors

GB/T 3836.1 Explosive Atmospheres - Part

3 Equipment protected by increased safety type "e"

GB/T 3836.4 Explosive atmospheres - Part

4 Equipment protected by intrinsic safety type "i"

GB/T 3836.9 Explosive Atmospheres - Part

9 Equipment Protected by Encapsulation "m"

GB/T 4208 Degrees of protection provided by enclosures (IP code)

GB 4351 Portable fire extinguishers

GB/T 4606 Basic dimensions and installation and interchangeability dimensions of the No. 50 towing pin for semi-trailer road vehicles

GB 4715 Point-type smoke detectors

GB/T 5008.1 Starting lead-acid batteries - Part