1 Scope
The Standard specifies the safety requirements for bus construction.
The Standard is applicable to Grade I, Grade II and Grade III single-decker buses in Category M2 and Category M3.
The Standard is inapplicable to sleeper buses, school buses and special-use buses.
2 Normative References
The following standards contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, the parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards. For undated references, the latest edition of the normative document referred to applies.
GB/T 3730.2—1996 Road vehicles C Masses C Vocabularies and codes (idt ISO 1176: 1990)
GB/T 4780—2000 Terms for motor vehicle bodies
GB 8410 Flammability of automotive interior materials
GB/T 10001.1 Public information graphical symbols for use on signs C Part 1:
Common symbols (GB/T 10001.1—2006, ISO 7001: 1990, Public information symbols, NEQ)
GB/T 12428 Laden mass calculation of buses
GB/T 15089 Classification of power-driven vehicles and trailers
GB/T 17578 Strength requirements for the superstructure of buses
GB 18986 The safety requirements for light bus construction
GB/T 19260—2003 Structure requirements for low-floor city-buses and low-entry
city-buses
QC/T 730—2005 Road vehicle low-tension cables with thin wall insulation
3 Terms and Definitions
The terms and definitions determined in GB/T 3730.2-1996, GB/T 15089 and GB
18986, as well as the following terms and definitions, are applicable to this Standard.
3.1
Gangway
The walking area for passengers to walk from a certain (row) seat to another (row) seat, to the access passage of the service door and to the passenger standing area. It does not include:
a) The space of 300 mm in front of the seats. The dimensions for seats facing the lateral surface and located above the wheel cover can be reduced to 225 mm;
b) The space above the steps;
c) The walking space provided only for entering a certain (row) seat or rows of face-to-face seats.
Note: this is different from 3.56 of GB/T 4780-2000.
3.2
Access passage
The extended space from the service door to the outer edge of the top step inside the bus. If a bus has no steps, the access passage refers to the space from the service door to 300 mm inside (according to 4.6.1.1~4.6.1.3).
3.3
Driver’s compartment
The space exclusively for the use of driver at all times except emergencies, including the space of the driver’s seat, steering wheel, controller, panel and other space occupied by the devices necessary for driving or controlling the bus.
Note: this is different from 3.21 of GB/T 4780-2000.
3.4
Separate compartment
A space inside the bus for passengers or a member of the crew to use during the running of the bus. The space is separated from the adjacent passenger compartment, but may have an access door between the two.
