Detail of JT/T 1178.1-2018

Introduction of JT/T 1178.1-2018

Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative. JT/T 1178 consists of the following two parts under the general title Safety Specification for Commercial Vehicle for Cargos Transportation: ——Part 1: Goods Vehicle; ——Part 2: Towing Vehicle and Trailer. This part is Part 1 of JT/T 1178. This part is developed in accordance with the rules given in GB/T 1.1-2009. This part was proposed by Transportation Services Department of the Ministry of Transport. This part is under the jurisdiction of National Technical Committee on Road Transport of Standardization Administration of China (SAC/TC 521). Safety Specification for Commercial Vehicle for Cargos Transportation - Part 1: Goods Vehicle 1 Scope This part of JT/T 1178 specifies safety technical requirements and test methods for whole vehicle, braking system, safety protection, load arrangement identification and fixing point, warning and prompt, etc. for goods vehicle. This part is applicable to goods vehicles of Categories N1, N2 and N3 but not applicable to tractor truck and semi-trailer towing vehicle. 2 Normative References The following referenced documents are indispensable for the application of this document. For dated reference, only the edition cited applies. For undated references, the latest edition (including all the amendments) applies. GB/T 3730.1 Motor Vehicles and Trailers - Types - Terms and Definitions GB/T 5922 Motor Vehicles and Towed Vehicles - Pressure Test Connection for Compressed-air Pneumatic Braking Equipment GB/T 6323-2014 Controllability and Stability Test Procedure for Automobiles GB 7258 Technical Specifications for Safety of Power-driven Vehicles Operating on Roads GB/T 8170 Rules of Rounding Off for Numerical Values & Expression and Judgment of Limiting Values GB 11551 The Protection of the Occupants in the Event of a Frontal Collision for Motor Vehicle GB 11567 Motor Vehicles and Trailers-lateral and Rear Underrun Protection Requirements GB/T 12534 Motor Vehicles - General Rules of Road Test Method GB 12676 Technical Requirements and Testing Methods for Commercial Vehicle and Trailer Braking Systems GB/T 13594 Antilock Braking Performance and Test Procedure for Motor Vehicles and Their Trailers GB/T 14172 Static Roll Stability Test Method for Motor Vehicles GB/T 15089 Classification of Power-driven Vehicles and Trailers GB/T 17619 Limits and Methods of Testing for Immunity of Electrical/Electronic Sub-assemblies in Vehicles to Electromagnetic Radiation GB/T 18655 Vehicles, Boats and Internal Combustion Engines - Radio Disturbance Characteristics - Limits and Methods of Measurement for the Protection of On-board Receivers GB 19239 Mounting Requirements of Special Equipment for Gas Vehicle GB/T 22309 Road Vehicles - Brake Linings - Shear Test Procedure for Disc Brake Pad and Drum Brake Shoe Assemblies GB/T 22311 Road Vehicles - Brake Linings - Compressive Strain Test Method GB 26511 Front Underrun Protective Requirements for Commercial Vehicle GB 26512-2011 The Protection of the Occupants of the Cab of a Commercial Vehicle GB 28373-2012 Tank Vehicles of Categories N and O with Regard to Rollover Stability GB 29753 Safety Requirements and Test Methods for Refrigerating Van for Transporting Food and Biological Products on Road GB/T 33577 Intelligent Transportation Systems - Forward Vehicle Collision Warning Systems - Performance Requirements and Test Procedures JT/T 230 Rubber Belt of Electrostatic Conductivity for Motor Vehicle JT/T 719-2016 Limits and Measurement Methods of Fuel Consumption for Commercial Vehicle for Cargos Transportation JT/T 794 GNSS for Operating Vehicles - Technical Specifications for Vehicle Terminals JT/T 882-2014 Technical Requirements of Cargo Loading-unloading and Securement for Swap Trailer Transport JT/T 883 Commercial Vehicle Driving Dangerous Warning System - Technical Requirements and Test Methods JT/T 884 Commercial Vehicle Anti-rolling Stability Test Method - Steady Circle Test JT/T 1046 Explosion Suppression Safety Technical Requirements for Road Transportation Vehicle Fuel Tank and Liquid Fuel Transportation Tank JT/T 1094-2016 Safety Specifications for Commercial Bus QC/T 480 Criterion Threshold and Evaluation of Controllability and Stability for Automobiles 3 Terms and Definitions For the purposes of this standard, the terms and definitions specified in GB/T 3730.1, GB/T 6323, GB/T 15089 and GB 26512 as well as the following apply. 3.1 commercial vehicle for cargos transportation vehicle, semi-trailer towing vehicle, tractor truck and trailer used for commercial cargos transportation Note: It is revised from definition 3.1 in JT/T 719-2016. 4 Whole Vehicle 4.1 The specific power of goods vehicle (excluding electric vehicle) shall be greater than or equal to 6.0kW/t. 4.2 Goods vehicle (excluding tank-type vehicle) shall be subjected to rollover stability bench test according to the test methods specified in GB/T 14172 and its stable roll angle shall meet the following requirements: ——The rightward and leftward stable roll angles shall not be lower than 35° under both no-load and static conditions; ——The rightward and leftward stable roll angles shall not be lower than 23° under both full load and static conditions; or simulation calculation under the conditions specified by the enterprise may be carried out according to Chapter 6 of GB 28373-2012. 4.3 Goods vehicle shall be subjected to steady state circular test under full-load condition according to the requirements of Chapter 10 in GB/T 6323-2014 and the degree of understeer shall be greater than or equal to 0°/(m/s2) and less than or equal 1.0°/(m/s2). 4.4 Goods vehicle shall be subjected to pylon course slalom test under full-load condition according to the requirements of Chapter 5 in GB/T 6323-2014 and the peak value of average yaw rate shall be less than the lower limit of corresponding stake spacing and reference speed in QC/T 480. 4.5 Goods vehicle shall be subjected to anti-rollover stability test under full-load condition according to the methods in JT/T 884; when the centripetal acceleration at the mass center of vehicle reaches 0.4g, the vehicle shall not roll over or sideslip. 4.6 GNSS vehicle terminal for operating vehicles shall be equipped for the goods vehicle of 12,000kg or more in total mass. The performance of on-board terminal of the GNSS for operating vehicles shall meet the requirements of JT/T 794. 4.7 Electronic stability control system (ESC) shall be equipped for the goods vehicle of 12,000kg or more in total mass and greater than 90km/h in maximum speed. The performance of ESC shall meet the requirements of Annex A in JT/T 1094-2016 and electromagnetic compatibility shall meet the requirements of GB/T 17619 and Grade 3 in GB/T 18655. 4.8 Tyre emergency safety device shall be equipped for all steering wheels of non-double steering axle goods vehicle which is 12,000kg or more in total mass and greater than 90km/h in maximum speed and there shall be obvious position identification in the cab. The performance requirement and test method for tyre emergency safety device shall meet the requirements of Annex A. 4.9 Goods vehicle is tested in no-load status according to the test methods specified in Annex B and the maximum width of turn passage shall be less than or equal to 5.0m. 4.10 Temperature monitoring device shall be equipped for refrigerating van; the performance of vehicle and its temperature monitoring device as well as refrigerating equipment shall meet the requirements of GB 29753 and relevant standards. 5 Braking System 5.1 Pneumatic braking system of goods vehicle shall be equipped with devices maintaining dryness of compressed air and oil water separation. 5.2 All driving brakes of goods vehicle shall be provided with automatic brake clearance adjustment function. 5.3 The gas holder and brake chamber of the braking system of goods vehicle shall be equipped with pressure test coupling for pressure braking device. The performance of pressure test coupling shall meet the requirements of GB/T 5922. 5.4 Goods vehicle shall be equipped with anti-lock braking device as well as signal device that is used for giving alarm when anti-lock braking device is out of function. The performance of anti-lock braking device shall meet the requirements of GB/T 13594 and electromagnetic compatibility shall meet the requirements of GB/T 17619 and Grade 3 in GB/T 18655. 5.5 Goods vehicle is tested according to the method specified in GB 12676 and the response time of pneumatic braking system shall be up to 0.6s. 5.6 The vehicle, which is fully loaded and running on a flat curve lane 150m in radius of center line, 3.7m in width and not larger than 0.5 in adhesion coefficient, shall keep within the lane in the process of braking in full power from 50km/h initial speed. 5.7 The brake linings performance of drum-type brake shoe assembly or disc-type brake pad assembly for goods vehicle shall meet the following requirements: a) The minimum shear strength of drum-type brake shoe assembly and disc-type brake pad assembly shall be greater than or equal to 2.5MPa when they are tested according to GB/T 22309; b) Where test is conducted according to GB/T 22311, the compression of drum-type brake shoe assembly is less than or equal to 2% at normal temperature and less than or equal to 4% at 200℃; c) Where test is conducted according to GB/T 22311, the compression of disc-type brake pad assembly is less than or equal to 2% at normal temperature and less than 5% at 400℃; 5.8 Where pneumatic brake is adopted by the goods vehicle of 12,000kg or more in total mass, the gas holder of braking system shall have rated working air pressure greater than or equal to 1,000kPa. 5.9 For the goods vehicle of 12,000kg or more in total mass and greater than 90km/h in maximum speed, all steering wheels shall be equipped with disc brake. Where the lining of disc brake needs to be replaced, acoustic or optical alarm device shall be used to send an alarm to the driver and the alarm device shall meet the requirements of GB 12676. 5.10 Automatic emergency braking system (AEBS) shall be equipped for the goods vehicle of 12,000kg or more in total mass and greater than 90km/h in maximum speed. 5.11 Retarder should be equipped for the goods vehicle greater than 18,000kg in total mass.

Contents of JT/T 1178.1-2018

Foreword i 1 Scope 2 Normative References 3 Terms and Definitions 4 Whole Vehicle 5 Braking System 6 Safety Protection 7 Load Arrangement Identification and Fixing Point 8 Warning and Prompt 9 Transition Period for Standard Implementation Annex A (Normative) Performance Requirements and Test Methods for Tyre Emergency Safety Device of Vehicle Annex B (Normative) Test Methods for Passing Ability of Vehicle at Right-angle Curve Annex C (Normative) Test Method for Cab Structural Strength and Human Model Requirements for Living Space Inspection Annex D (Informative) Drawing of Identification Curve for Load Arrangement Annex E (Normative) Number, Installation Positions and Strength Requirements for Vehicle Fixing Points