Safety specification for commercial vehicle for cargos transportation Part 2: Towing vehicle and trailer
1 Scope
This part of JT/T 1178 specifies the safety technical requirements and test methods for the complete vehicle, brake system, safety protection, mechanical connection, pneumatic and electrical connection, load arrangement identification and fastening point, alarm and prompt for towing vehicle and trailer.
This part is applicable to N2 and N3 towing vehicles, and O3 and O4 trailers and their combination.
2 Normative references
The following referenced documents are indispensable for the application 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/T 3730.1 Motor vehicles and trailers—Types—Terms and definitions
GB/T 3730.2 Road vehicle - Masses - Vocabulary and codes
GB 4094 Symbols for controls, indicators and tell-tales of motor vehicles
GB/T 4606 Road vehicles—50 semi-trailer fifth wheel coupling pin—Basic and mounting/interchangeability dimensions
GB/T 4781 Commercial road vehicles—50mm drawbar eye—Interchangeability
GB 4785 Prescription for installation of the external lighting and light-signalling devices for motor vehicles and their trailers
GB/T 5053.1-2006 Road vehicles—Connectors for the electrical connection of towing and towed vehicles—7-pole connector type 24 N (normal) for vehicles with 24 V nominal supply voltage
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 Automobile
GB 7258-2017 Technical specifications for safety of power-driven vehicles operating on roads
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 13880 Road vehicles—Fifth wheels—Interchangeability
GB/T 13881 Pneumatic braking connections between motor vehicles and towed vehicles
GB/T 14172 Static roll stability test method for motor vehicles
GB 15084 Motor vehicles—Devices for indirect vision—Requirements of performance and installation
GB/T 15087 Road vehicles—Drawbar couplings and eyes for hinged drawbars—Strength tests
GB/T 15088 Road vehicles—Fifth wheel kingpins —Strength test
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 20069 Road vehicle—Fifth wheel couplings strength tests
GB/T 20716.1 Road vehicles—Connectors for the electrical connection of towing and towed vehicles—Part 1: Connectors for braking systems and running gears of vehicles with 24V nominal supply voltage
GB/T 20717 Road vehicles—Connectors for the electrical connection of towing and towed vehicles—15-pole connector for vehicles with 24V nominal supply voltage
GB/T 22309 Road vehicles—Brake linings—Shear test procedure for disc break pad and drum brake shoe assemblies
GB/T 22311 Road vehicles—Brake linings—Compressive strain test method
GB/T 25088 Road vehicles—Connectors for the electrical connection of towing and towed vehicles—7-pole connector type 24S (supplementary) for vehicles with 24 V nominal supply voltage
GB/T 25979 Road vehicles—Heavy commercial vehicle combinations and articulated buses—Lateral stability test methods
GB 25990 Rear-marking plates for vehicles and their trailers
GB 26149 Performance requirements and test methods of tire pressure monitoring system for passenger cars
GB 26511 Front underrun protective requirements for commercial vehicle
GB/T 26774 Technical specification for car carriers
GB/T 26777 Semitrailer landing gears
GB 29753 Safety requirements and test methods for refrigerating van for transporting food and biological products on road
GB/T 31083 Technical requirements of tie-down used in passenger car for road transportation
GB/T 31879 Road vehicles—General technical requirements for fifth wheel
GB/T 32692 Performance test methods for endurance braking systems of commercial vehicles
GB/T 32860 Road vehicles—Interchangeability of drawbar couplings
GB/T 32861 Road vehicles—Location of electrical and pneumatic connections between towing vehicles and trailers
GB/T 33577 Intelligent transportation systems—Forward vehicle collision warning systems—Performance requirements and test procedures
GB/T 35782-2017 Specification for swap trailer transport of road vehicles
GB/T 36883-2018 Technical specification of LNG vehicle
JT/T 230 Rubber belt of electrostatic conductivity
JT/T 389 Specification for van trailers
JT/T 475 Trailer axle
JT/T 719 Limits and measurement methods of fuel consumption for commercial vehicle for cargos transportation
JT/T 794 GNSS system for operating vehicles—Technical specification 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 procedures
JT/T 884 Commercial vehicle anti-rolling stability test method—Steady circle test
JT/T 1046 Explosion suppression safety technique requirements for road transportation vehicle fuel tank and liquid fuel transportation tank
JT/T 1094-2016 Safety specifications for commercial bus
JT/T 1178.1-2018 Safety specification for commercial vehicle for cargos transportation CPart 1: Goods vehicle
JT/T 1242-2019 Performance requirements and test procedures for advanced emergency braking system of commercial vehicle
QC/T 200 Performance requirements and test methods of reservoir for air brake equipment of automobile and trailer
QC/T 480 Criterion thresholds and evaluation of controllability and stability for automobiles
ISO 12357-1 Commercial toad vehicles—Drawbar couplings and eyes for rigid drawbars—Part 1:Strength tests for general cargo centre-axle trailers
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 3730.1, GB/T 3730.2, GB 4094, GB/T 6323, GB/T 15089, GB/T 26774 and JT/T 1178.1 as well as the following apply.
3.1
towing vehicle
vehicles used for towing trailers including semi-trailer towing vehicle and towing trucks.
3.2
towing truck
trucks with special devices for towing draw bar trailer and centre-axle trailer.
Note: It is derived from JT/T 719-2016, 3.2.
3.3
centre-axle trailer
trailers where the towing device cannot move vertically (relative to the trailer) and the axle of the trailer is located close to the center of gravity of the trailer (in the case of uniform load). The vertical static load acting on the towing truck shall not exceed 10% or 10,000 N (whichever is smaller) of the maximum design total mass of the trailer.
Note: It is derived from GB/T 3730.1-2001, 2.2.3.
3.4
draw bar trailer
full trailer
trailers with at least two shafts, one of which is rotatable and connected with a towing truck through a draw bar moving in an angular direction; the draw bar can move vertically and is connected to the vehicle without bearing any vertical force.
Note: It is derived from GB/T 3730.1-2001, 2.2.1.
3.5
articulated vehicle
semi-trailer vehicle combination
combination of semi-trailer towing vehicle and semitrailer.
Note: It is derived from GB 7258-2017, 3.4.3.
JT/T 1178.2-2019 The following standards are cited：
JT/T 1178.2-2019 Cited by the following standards：
