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.
This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces JT/T 325-2013 Type dividing and class rating for commercial motor-vehicles of passenger transport. In addition to editorial changes, the following main technical changes have been made with respect to JT/T 325-2013:
——The scope has been modified (see Clause 1 herein; Clause 1 of 2013 edition);
——The definition of the term "commercial motor-vehicles of passenger transport" has been modified (see 3.1 herein; 3.1 of 2013 edition);
——The terms and definition of "bus" and "passenger car" have been added (see 3.1.1 and 3.1.2);
——The scope of mini-size vehicle has been modified (see Table 1 herein; Table 1 of 2013 edition);
——The classification of passenger car has been modified (see Table 2 herein; Table 2 of 2013 edition);
——The rating contents of passenger car have been modified (see 6.2 herein; 6.2 of 2013 edition);
——The requirements for passenger car have been added (see 7.3.4);
——The requirements for warranty period of commercial motor-vehicles of passenger transport have been deleted (see 8.1.1 of 2013 edition);
——The requirements for the discharge of engine have been deleted (see 8.1.2 of 2013 edition);
——The requirements for safety performance of bus have been added (see 8.1.2);
——The requirements for bus driving areas have been added (see 8.1.4);
——The requirements for safety marks of buses have been added (see 8.1.5);
——The requirements that buses shall indicate the quantity of seats have been added (see 8.1.6);
——The requirements for air quality of bus have been added (see 8.1.7);
——The requirements for the air pressure of bus brake air reservoir have been added (see 8.1.12);
——The requirements for bus emergency hammer have been added (see 8.1.13);
——The requirements for configuring emergency hammers and automatic glass breaking devices near the emergency windows of buses have been added (see 8.1.14);
——The requirements for roof escape hatch on bus have been added (see 8.1.15);
——The reference standards for flame-retardant requirements of non-metallic materials have been modified (see 8.1.17 herein; 8.1.9 of 2013 edition);
——The requirements for parking wedge have been added (see 8.1.19);
——The requirements for emergency exit have been modified (see 8.1.24 herein; 8.1.18 of 2013 edition);
——The requirements for the measurement of the bus seats have been added (see 8.1.26);
——The requirements for buses to be equipped with fire extinguishing devices have been added (see 8.1.27);
——The requirements for installing fire extinguishing devices in power battery boxes of pure electric buses and hybrid power buses have been added (see 8.1.28);
——The requirements for driving range of hybrid power buses and pure electric buses have been added (see 8.1.29);
——The requirements for the total mass of power battery system of pure electric bus have been added (see 8.1.30);
——The requirements for external roof luggage racks have been added (see 8.1.31);
——The requirements for the structure and quantity of passenger doors have been added (see Table 3);
——The requirements for the evacuation door have been added (see Table 3);
——The requirements for push-out emergency window have been added (see Table 3);
——The requirements for roof escape hatch have been added (see Table 3);
——The requirements for advanced emergency braking system (AEBS) have been added (see Table 3);
——The requirements for lane departure warning system (LDWS) have been added (see Table 3);
——The requirements for electronic stability controller (ESC) have been added (see Table 3);
——The requirements for tire blow-out emergency safety device have been added (see Table 3);
——The requirements for radial tire have been deleted (Table 4 of 2013 edition);
——The requirements for tire pressure monitoring and alarm system (only for single-tire wheels) have been modified (see Table 3 herein; Table 4 of 2013 edition);
——The requirements for tubeless radial tires have been modified (see Table 3 herein; Table 4 of 2013 edition);
——The requirements for front and rear disc brakes have been modified (see Table 3 herein; Table 4 of 2013 edition);
——The requirements for ABS (Class I) have been modified (see Table 3 herein; Table 4 of 2013 edition);
——The requirements for air purification equipment (not less than 10 m3/h per capita) have been modified (see Table 3 herein; Table 4 of 2013 edition);
——The requirements for CAN bus have been modified (see Table 3 herein; Table 4 of 2013 edition);
——The requirements for bus internal noise have been modified (see 8.2.1 herein; 8.2.1 of 2013 edition);
——The requirements for passenger quantity of sleeper bus have been added (see 8.2.2.2);
——The necessary conditions for class rating of extra-large double-deck highway buses have been deleted (see 8.2.3 of 2013 edition);
——The necessary conditions of rating for passenger car have been modified (see Table 6 herein; Table 7 of 2013 edition).
This standard is proposed by the Transportation Services Department of the Ministry of Transport.
This standard is under the jurisdiction of the Subcommittee on Bus of National Technical Committee on Automobiles of Standardization Administration of China (SAC/TC 114/SC 22).
The previous editions of this standard are as follows:
Type dividing and class rating for commercial motor-vehicles of passenger transport
1 Scope
This standard specifies the types of and class rating for commercial motor-vehicles of passenger transport, as well as the contents, rules and requirements of class rating.
This standard is applicable to the class rating for the buses and passenger cars used for passenger transportation on operational road, including Category M2, Class B of Category M3, and Class III.
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 any amendment) applies.
GB 7258 Technical specifications for safety of power driven vehicles operating on roads
GB 13094 The safety requirements for bus construction
GB/T 13594 Antilock braking performance and test procedure for motor vehicles and their trailers
GB/T 16887 Safety requirements for sleeper bus construction
GB/T 17729 Hygienic standard for the air quality inside long distance coach
GB 18565 Composite performance requirement and detecting methods for road transport vehicles
GB 19239 Mounting requirements for liquefied natural gas vehicle special equipment
GB/T 20734 Mounting requirements for liquefied natural gas vehicle special equipment
GB/T 23334 Open-type roof escape hatch on bus
GB 30678 Safety signs and information symbols for the use of bus
GB 34655 Specifications for extinguishing equipment arrangement in bus
JT/T 198 Dividing and rating requirements for technical classification of road transport vehicles
JT/T 711 Limits and measurement methods of fuel consumption for commercial vehicle for passenger transportation
JT/T 782 Technical requirements of tyre failure emergency safety device for bus
JT/T 1030 Bus electromagnetic glass breaker
JT/T 1094 Safety specifications for commercial bus
JT/T 1095 Flame resistance of commercial bus interior materials
QC/T 476 Rain proof performance limit and test method for bus
QC/T 633 The seats of passenger vehicles
QC/T 768 Coach flush toilet
QC/T 997 Structural requirements of integral body for buses
QC/T 1048 Bus emergency hammer
3 Terms and definitions
For the purpose of this document, the following terms and definitions apply.
3.1
commercial motor-vehicles of passenger transport
vehicles used for passenger transportation on operational road, including buses and passenger cars
3.1.1
bus
buses used for passenger transportation on operational road, including Category M2, Class B of Category M3, and Class III
3.1.2
passenger car
vehicles used for passenger transportation on operational road, with a maximum of nine seats (including the driver's seat), which are designed and manufactured primarily for carrying passengers as well as their carry-on baggage and/or temporary items
[GB 7258-2017, 3.2.1.1]
3.2
passenger space
area for passengers, i.e., the driving area and passenger area
[GB/T 4780-2000, 3.23]
4 Type dividing
4.1 The commercial motor-vehicles of passenger transport are divided into two categories: buses and passenger cars.
4.2 Buses are divided into four types according to their length, including extra-large, large, medium and mini-size, as shown in Table 1.
Table 1 Type dividing m
Type Extra-large a Large Medium Mini-size
Vehicle length L 12 < L ≤ 13.7 9 < L ≤ 12 6 < L ≤ 12 L ≤ 6
a Three-axle bus
4.3 Type dividing is not required for passenger car.
5 Class rating
See Table 2 for class rating.
Table 2 Class rating
Type Bus Passenger car
Extra-large Large Medium Mini-size
Class High level (III) High level (II) High level (I) Intermediate Ordinary High level (III) High level (II) High level (I) Intermediate Ordinary High level (II) High level (I) Intermediate Ordinary High level (II) High level (I) Intermediate Ordinary High level Intermediate Ordinary
6 Content of class rating
6.1 The main contents of class rating for bus include: bus construction, chassis, configuration, active safety, power performance, bus internal noise and air conditioning and control, etc.
6.2 The main contents of class rating for passenger car include: wheelbase, configuration, power performance, air conditioning and control, fire extinguisher, satellite positioning system, etc.
7 Rules for class rating
7.1 Necessary conditions
All the rating indexes specified in Clause 8 is necessary conditions.
7.2 Class rating for new commercial motor-vehicles of passenger transport
The new commercial motor-vehicles of passenger transport refer to the new product developed by the production enterprise or the imported vehicles, on the basis of the technical documents (import inspection documents) and the real vehicle inspection results, the class rating shall be conducted in accordance with Clause 8.
7.3 Class verification of commercial motor-vehicles of passenger transport in use
7.3.1 Buses that meet the relevant regulations of GB 18565 after inspection and testing are capable of conducting the corresponding class verification.
7.3.2 Buses that meet the relevant regulations for Class I vehicles in GB 18565 after inspection and testing are capable of conducting the corresponding high level bus verification.
7.3.3 According to the requirements of 7.3.1 and 7.3.2, inspect the real vehicle inspection results of existing technical classes and facilities of vehicles in accordance with the regulations of Clause 8, and conduct class verification.
7.3.4 Passenger cars shall comply with the requirements of GB 7258.
7.3.5 The rated commercial motor-vehicles of passenger transport in use shall be re-rated at the time of ownership transfer.
8 Requirements for class rating
8.1 General requirements of class rating for bus
8.1.1 The fuel consumption shall meet requirements of JT/T 711.
8.1.2 The safety performance requirements of bus shall meet the requirements of JT/T 1094.
8.1.3 The luggage compartment is separated from the passenger space and has independent doors outside the vehicle. If it is separated in several places, the volume of any one place shall not be less than 0.15 m3 (where any side length is not less than 0.4 m), otherwise it is not included in the total volume. In the case of checking the luggage compartment volume, the number of passengers shall be verified according to the rating (excluding drivers).
8.1.4 Floor shall not be arranged above the driving area of bus.
8.1.5 The bus shall be equipped with safety marking, of which shall meet the requirements of GB 30698.
8.1.6 The quantity of seats provided by the bus to passengers (including drivers) shall be indicated in Chinese and Arabic numerals with a height greater than or equal to 100 mm near the passenger door.
8.1.7 The air quality in the bus shall meet the requirements of GB 17729.
8.1.8 The air purification equipment shall be capable of sterilizing and eliminating harmful gases.
8.1.9 The rain proof performance shall meet the requirements of QC/T 476.
8.1.10 The second or third axle of an extra-large bus shall have a follow-up steering mechanism.
8.1.11 The anti-blocking brake system (ABS) shall comply with the requirements of Class I anti-blocking systems specified in GB/T 13594.
8.1.12 The working air pressure of the brake air reservoir of the commercial motor-vehicles of passenger transport using pneumatic braking shall be greater than or equal to 1,000 kPa.
8.1.13 The emergency hammer conforming to QC/T 1048 shall be installed near the emergency window of buses. If the emergency hammer is removed, the alarm shall be sent out through the sound signal. An emergency hammer shall be provided near the driver's seat. If the power-operated service door is configured, the passenger door emergency switch that is easy for the driver to operate shall be set; if the automatic window breaking device is configured, the switch of the automatic window breaking device that is easy for the driver to operate shall be set.
8.1.14 In addition to emergency hammers, a device with automatic glass breaking function shall be equipped near the emergency window of buses with a length less than or equal to 7 m, and the window breaking function of the device shall conform to the regulations of JT/T 1030.
8.1.15 Buses with a length of more than 9 m (excluding hydrogen fuel cell buses) shall be equipped with at least two roof escape hatches; buses with a length greater than 7 m and less than or equal to 9 m shall be equipped with at least one roof escape hatch. The open-type roof escape hatch on bus shall meet the requirements of GB/T 23334.
8.1.16 The installation of special devices for liquefied petroleum gas and compressed natural gas buses shall comply with GB 19239, and the installation of special devices for liquefied natural gas vehicles shall comply with GB/T 20734.
8.1.17 The flame-retardant performance of interior materials for buses shall meet the requirements of JT/T 1095.
8.1.18 If an electromagnetic retarder is installed, a temperature alarm system or an automatic fire extinguishing device shall be installed at the installation site.
8.1.19 Buses shall be equipped with at least two parking wedges (such as triangular skids).
8.1.20 The distance between seats shall meet the requirements of GB 13094.
8.1.21 The performance of the tire blow-out emergency safety device shall comply with the regulations of JT/T 782, and relevant information shall be displayed to the driver through the display screen on the instrument panel.
8.1.22 Large buses of and extra-large buses of high level (II) and (III) are required to be equipped with toilets, which shall meet the requirements of QC/T 768, and the sewage from hand sinks and flushing toilets shall be stored in sewage tanks.
8.1.23 The passenger door emergency controller shall comply with the requirements of GB 7258.
8.1.24 The emergency exit shall meet the requirements of GB 13094.
8.1.25 Audio and video playback and microphone equipment shall be installed in the vehicle, and the microphone equipment shall be connected by audio mode.
8.1.26 The measurement for the seats of buses shall meet the requirements of GB 13094, and the seat size specification shall comply with those specified in QC/T 633.
8.1.27 The fire extinguishing devices for buses shall meet the requirements of CB 34655.
8.1.28 Automatic fire extinguishing devices with alarm function shall be equipped in the power battery boxes of pure electric buses and hybrid power buses.
8.1.29 The uniform velocity method (40 km/h) is used to test the pure electric working condition of the hybrid power bus, and the range shall not be less than 50 km. The uniform velocity method (40 km/h) is also used to test the pure electric working condition of the pure electric bus, and the range shall not be less than 200 km.
8.1.30 The ratio of the total mass of the power battery system of pure electric bus to the whole vehicle kerb mass shall not be greater than 20%.
8.1.31 The buses shall not be equipped with external roof luggage racks.
8.2 Necessary conditions of class rating for bus
8.2.1 Necessary conditions of class rating for bus
See Table 3 for the necessary conditions of class rating for bus, in which the bus internal noise shall conform to the relevant regulations of the noise limit and measurement method for bus running at constant speed.
Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Type dividing 5 Class rating 6 Content of class rating 7 Rules for class rating 8 Requirements for class rating
JT/T 325-2018, JT 325-2018, JTT 325-2018, JT/T325-2018, JT/T 325, JT/T325, JT325-2018, JT 325, JT325, JTT325-2018, JTT 325, JTT325
Introduction of JT/T 325-2018
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.
This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces JT/T 325-2013 Type dividing and class rating for commercial motor-vehicles of passenger transport. In addition to editorial changes, the following main technical changes have been made with respect to JT/T 325-2013:
——The scope has been modified (see Clause 1 herein; Clause 1 of 2013 edition);
——The definition of the term "commercial motor-vehicles of passenger transport" has been modified (see 3.1 herein; 3.1 of 2013 edition);
——The terms and definition of "bus" and "passenger car" have been added (see 3.1.1 and 3.1.2);
——The scope of mini-size vehicle has been modified (see Table 1 herein; Table 1 of 2013 edition);
——The classification of passenger car has been modified (see Table 2 herein; Table 2 of 2013 edition);
——The rating contents of passenger car have been modified (see 6.2 herein; 6.2 of 2013 edition);
——The requirements for passenger car have been added (see 7.3.4);
——The requirements for warranty period of commercial motor-vehicles of passenger transport have been deleted (see 8.1.1 of 2013 edition);
——The requirements for the discharge of engine have been deleted (see 8.1.2 of 2013 edition);
——The requirements for safety performance of bus have been added (see 8.1.2);
——The requirements for bus driving areas have been added (see 8.1.4);
——The requirements for safety marks of buses have been added (see 8.1.5);
——The requirements that buses shall indicate the quantity of seats have been added (see 8.1.6);
——The requirements for air quality of bus have been added (see 8.1.7);
——The requirements for the air pressure of bus brake air reservoir have been added (see 8.1.12);
——The requirements for bus emergency hammer have been added (see 8.1.13);
——The requirements for configuring emergency hammers and automatic glass breaking devices near the emergency windows of buses have been added (see 8.1.14);
——The requirements for roof escape hatch on bus have been added (see 8.1.15);
——The reference standards for flame-retardant requirements of non-metallic materials have been modified (see 8.1.17 herein; 8.1.9 of 2013 edition);
——The requirements for parking wedge have been added (see 8.1.19);
——The requirements for emergency exit have been modified (see 8.1.24 herein; 8.1.18 of 2013 edition);
——The requirements for the measurement of the bus seats have been added (see 8.1.26);
——The requirements for buses to be equipped with fire extinguishing devices have been added (see 8.1.27);
——The requirements for installing fire extinguishing devices in power battery boxes of pure electric buses and hybrid power buses have been added (see 8.1.28);
——The requirements for driving range of hybrid power buses and pure electric buses have been added (see 8.1.29);
——The requirements for the total mass of power battery system of pure electric bus have been added (see 8.1.30);
——The requirements for external roof luggage racks have been added (see 8.1.31);
——The requirements for the structure and quantity of passenger doors have been added (see Table 3);
——The requirements for the evacuation door have been added (see Table 3);
——The requirements for push-out emergency window have been added (see Table 3);
——The requirements for roof escape hatch have been added (see Table 3);
——The requirements for advanced emergency braking system (AEBS) have been added (see Table 3);
——The requirements for lane departure warning system (LDWS) have been added (see Table 3);
——The requirements for electronic stability controller (ESC) have been added (see Table 3);
——The requirements for tire blow-out emergency safety device have been added (see Table 3);
——The requirements for radial tire have been deleted (Table 4 of 2013 edition);
——The requirements for tire pressure monitoring and alarm system (only for single-tire wheels) have been modified (see Table 3 herein; Table 4 of 2013 edition);
——The requirements for tubeless radial tires have been modified (see Table 3 herein; Table 4 of 2013 edition);
——The requirements for front and rear disc brakes have been modified (see Table 3 herein; Table 4 of 2013 edition);
——The requirements for ABS (Class I) have been modified (see Table 3 herein; Table 4 of 2013 edition);
——The requirements for air purification equipment (not less than 10 m3/h per capita) have been modified (see Table 3 herein; Table 4 of 2013 edition);
——The requirements for CAN bus have been modified (see Table 3 herein; Table 4 of 2013 edition);
——The requirements for bus internal noise have been modified (see 8.2.1 herein; 8.2.1 of 2013 edition);
——The requirements for passenger quantity of sleeper bus have been added (see 8.2.2.2);
——The necessary conditions for class rating of extra-large double-deck highway buses have been deleted (see 8.2.3 of 2013 edition);
——The necessary conditions of rating for passenger car have been modified (see Table 6 herein; Table 7 of 2013 edition).
This standard is proposed by the Transportation Services Department of the Ministry of Transport.
This standard is under the jurisdiction of the Subcommittee on Bus of National Technical Committee on Automobiles of Standardization Administration of China (SAC/TC 114/SC 22).
The previous editions of this standard are as follows:
——JT/T 325-1997, JT/T 325-2002, JT/T 325-2004, JT/T 325-2006, JT/T 325-2010 and JT/T 325-2013.
Type dividing and class rating for commercial motor-vehicles of passenger transport
1 Scope
This standard specifies the types of and class rating for commercial motor-vehicles of passenger transport, as well as the contents, rules and requirements of class rating.
This standard is applicable to the class rating for the buses and passenger cars used for passenger transportation on operational road, including Category M2, Class B of Category M3, and Class III.
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 any amendment) applies.
GB 7258 Technical specifications for safety of power driven vehicles operating on roads
GB 13094 The safety requirements for bus construction
GB/T 13594 Antilock braking performance and test procedure for motor vehicles and their trailers
GB/T 16887 Safety requirements for sleeper bus construction
GB/T 17729 Hygienic standard for the air quality inside long distance coach
GB 18565 Composite performance requirement and detecting methods for road transport vehicles
GB 19239 Mounting requirements for liquefied natural gas vehicle special equipment
GB/T 20734 Mounting requirements for liquefied natural gas vehicle special equipment
GB/T 23334 Open-type roof escape hatch on bus
GB 30678 Safety signs and information symbols for the use of bus
GB 34655 Specifications for extinguishing equipment arrangement in bus
JT/T 198 Dividing and rating requirements for technical classification of road transport vehicles
JT/T 711 Limits and measurement methods of fuel consumption for commercial vehicle for passenger transportation
JT/T 782 Technical requirements of tyre failure emergency safety device for bus
JT/T 1030 Bus electromagnetic glass breaker
JT/T 1094 Safety specifications for commercial bus
JT/T 1095 Flame resistance of commercial bus interior materials
QC/T 476 Rain proof performance limit and test method for bus
QC/T 633 The seats of passenger vehicles
QC/T 768 Coach flush toilet
QC/T 997 Structural requirements of integral body for buses
QC/T 1048 Bus emergency hammer
3 Terms and definitions
For the purpose of this document, the following terms and definitions apply.
3.1
commercial motor-vehicles of passenger transport
vehicles used for passenger transportation on operational road, including buses and passenger cars
3.1.1
bus
buses used for passenger transportation on operational road, including Category M2, Class B of Category M3, and Class III
3.1.2
passenger car
vehicles used for passenger transportation on operational road, with a maximum of nine seats (including the driver's seat), which are designed and manufactured primarily for carrying passengers as well as their carry-on baggage and/or temporary items
[GB 7258-2017, 3.2.1.1]
3.2
passenger space
area for passengers, i.e., the driving area and passenger area
[GB/T 4780-2000, 3.23]
4 Type dividing
4.1 The commercial motor-vehicles of passenger transport are divided into two categories: buses and passenger cars.
4.2 Buses are divided into four types according to their length, including extra-large, large, medium and mini-size, as shown in Table 1.
Table 1 Type dividing m
Type Extra-large a Large Medium Mini-size
Vehicle length L 12 < L ≤ 13.7 9 < L ≤ 12 6 < L ≤ 12 L ≤ 6
a Three-axle bus
4.3 Type dividing is not required for passenger car.
5 Class rating
See Table 2 for class rating.
Table 2 Class rating
Type Bus Passenger car
Extra-large Large Medium Mini-size
Class High level (III) High level (II) High level (I) Intermediate Ordinary High level (III) High level (II) High level (I) Intermediate Ordinary High level (II) High level (I) Intermediate Ordinary High level (II) High level (I) Intermediate Ordinary High level Intermediate Ordinary
6 Content of class rating
6.1 The main contents of class rating for bus include: bus construction, chassis, configuration, active safety, power performance, bus internal noise and air conditioning and control, etc.
6.2 The main contents of class rating for passenger car include: wheelbase, configuration, power performance, air conditioning and control, fire extinguisher, satellite positioning system, etc.
7 Rules for class rating
7.1 Necessary conditions
All the rating indexes specified in Clause 8 is necessary conditions.
7.2 Class rating for new commercial motor-vehicles of passenger transport
The new commercial motor-vehicles of passenger transport refer to the new product developed by the production enterprise or the imported vehicles, on the basis of the technical documents (import inspection documents) and the real vehicle inspection results, the class rating shall be conducted in accordance with Clause 8.
7.3 Class verification of commercial motor-vehicles of passenger transport in use
7.3.1 Buses that meet the relevant regulations of GB 18565 after inspection and testing are capable of conducting the corresponding class verification.
7.3.2 Buses that meet the relevant regulations for Class I vehicles in GB 18565 after inspection and testing are capable of conducting the corresponding high level bus verification.
7.3.3 According to the requirements of 7.3.1 and 7.3.2, inspect the real vehicle inspection results of existing technical classes and facilities of vehicles in accordance with the regulations of Clause 8, and conduct class verification.
7.3.4 Passenger cars shall comply with the requirements of GB 7258.
7.3.5 The rated commercial motor-vehicles of passenger transport in use shall be re-rated at the time of ownership transfer.
8 Requirements for class rating
8.1 General requirements of class rating for bus
8.1.1 The fuel consumption shall meet requirements of JT/T 711.
8.1.2 The safety performance requirements of bus shall meet the requirements of JT/T 1094.
8.1.3 The luggage compartment is separated from the passenger space and has independent doors outside the vehicle. If it is separated in several places, the volume of any one place shall not be less than 0.15 m3 (where any side length is not less than 0.4 m), otherwise it is not included in the total volume. In the case of checking the luggage compartment volume, the number of passengers shall be verified according to the rating (excluding drivers).
8.1.4 Floor shall not be arranged above the driving area of bus.
8.1.5 The bus shall be equipped with safety marking, of which shall meet the requirements of GB 30698.
8.1.6 The quantity of seats provided by the bus to passengers (including drivers) shall be indicated in Chinese and Arabic numerals with a height greater than or equal to 100 mm near the passenger door.
8.1.7 The air quality in the bus shall meet the requirements of GB 17729.
8.1.8 The air purification equipment shall be capable of sterilizing and eliminating harmful gases.
8.1.9 The rain proof performance shall meet the requirements of QC/T 476.
8.1.10 The second or third axle of an extra-large bus shall have a follow-up steering mechanism.
8.1.11 The anti-blocking brake system (ABS) shall comply with the requirements of Class I anti-blocking systems specified in GB/T 13594.
8.1.12 The working air pressure of the brake air reservoir of the commercial motor-vehicles of passenger transport using pneumatic braking shall be greater than or equal to 1,000 kPa.
8.1.13 The emergency hammer conforming to QC/T 1048 shall be installed near the emergency window of buses. If the emergency hammer is removed, the alarm shall be sent out through the sound signal. An emergency hammer shall be provided near the driver's seat. If the power-operated service door is configured, the passenger door emergency switch that is easy for the driver to operate shall be set; if the automatic window breaking device is configured, the switch of the automatic window breaking device that is easy for the driver to operate shall be set.
8.1.14 In addition to emergency hammers, a device with automatic glass breaking function shall be equipped near the emergency window of buses with a length less than or equal to 7 m, and the window breaking function of the device shall conform to the regulations of JT/T 1030.
8.1.15 Buses with a length of more than 9 m (excluding hydrogen fuel cell buses) shall be equipped with at least two roof escape hatches; buses with a length greater than 7 m and less than or equal to 9 m shall be equipped with at least one roof escape hatch. The open-type roof escape hatch on bus shall meet the requirements of GB/T 23334.
8.1.16 The installation of special devices for liquefied petroleum gas and compressed natural gas buses shall comply with GB 19239, and the installation of special devices for liquefied natural gas vehicles shall comply with GB/T 20734.
8.1.17 The flame-retardant performance of interior materials for buses shall meet the requirements of JT/T 1095.
8.1.18 If an electromagnetic retarder is installed, a temperature alarm system or an automatic fire extinguishing device shall be installed at the installation site.
8.1.19 Buses shall be equipped with at least two parking wedges (such as triangular skids).
8.1.20 The distance between seats shall meet the requirements of GB 13094.
8.1.21 The performance of the tire blow-out emergency safety device shall comply with the regulations of JT/T 782, and relevant information shall be displayed to the driver through the display screen on the instrument panel.
8.1.22 Large buses of and extra-large buses of high level (II) and (III) are required to be equipped with toilets, which shall meet the requirements of QC/T 768, and the sewage from hand sinks and flushing toilets shall be stored in sewage tanks.
8.1.23 The passenger door emergency controller shall comply with the requirements of GB 7258.
8.1.24 The emergency exit shall meet the requirements of GB 13094.
8.1.25 Audio and video playback and microphone equipment shall be installed in the vehicle, and the microphone equipment shall be connected by audio mode.
8.1.26 The measurement for the seats of buses shall meet the requirements of GB 13094, and the seat size specification shall comply with those specified in QC/T 633.
8.1.27 The fire extinguishing devices for buses shall meet the requirements of CB 34655.
8.1.28 Automatic fire extinguishing devices with alarm function shall be equipped in the power battery boxes of pure electric buses and hybrid power buses.
8.1.29 The uniform velocity method (40 km/h) is used to test the pure electric working condition of the hybrid power bus, and the range shall not be less than 50 km. The uniform velocity method (40 km/h) is also used to test the pure electric working condition of the pure electric bus, and the range shall not be less than 200 km.
8.1.30 The ratio of the total mass of the power battery system of pure electric bus to the whole vehicle kerb mass shall not be greater than 20%.
8.1.31 The buses shall not be equipped with external roof luggage racks.
8.2 Necessary conditions of class rating for bus
8.2.1 Necessary conditions of class rating for bus
See Table 3 for the necessary conditions of class rating for bus, in which the bus internal noise shall conform to the relevant regulations of the noise limit and measurement method for bus running at constant speed.
Contents of JT/T 325-2018
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Type dividing
5 Class rating
6 Content of class rating
7 Rules for class rating
8 Requirements for class rating
