1 Scope
This standard specifies the terms and definitions, requirements as well as test methods for students seat systems (hereinafter referred to as "seat") of special school bus and terms and their anchorages.
This standard is applicable to the student seats on the special school bus and the anchorages applied to install these seats as well as the restraining barriers installed in front of the seats on the special school bus.
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 14166 Safety Belts and Restraint Systems, Restraint Systems, Children Restraint Systems and ISOFIX Child Restraint Systems for Occupants of Motor Vehicles
GB 14167 Safety-belt Anchorages, ISOFIX Anchorages and the Upper Anchorage Systems for Vehicles
GB 24407-2012 The Safety Technique Specifications of Special School Bus for Schoolchildren
GB 27887 Child Occupants Restraint Systems for Motor Vehicles
ISO 6487 (Road Vehicles-Measurement Techniques in Impact Tests-Instrumentation)
3 Terms and Definitions
The following terms and definitions as well as those in GB 24407-201× are applicable to this standard.
3.1 Seat system
The facility installed on the vehicle for the seating of one or more passengers, including complete ornament and accessories.
3.2 Students seat system
The specialized seat system for the seating of young children and students on the special school bus.
3.3 Adjustment system
A kind of device capable to offer a comfortable seating to the passengers by adjusting the seats or their components.
[Definition 3.2, GB 13057-2003]
3.4 Displacement system
A kind of device that makes the seat or some component movable widthways or lengthways for passengers going conveniently in and out where there is no fixed middle position.
[Definition 3.3, GB 13057-2003]
3.5 Locking systemlocking system
A kind of device applied to ensure that the seat or its component is kept in its application position.
[Definition 3.4, GB 13057-2003]
3.6 Anchorage
The component on the vehicle body applied for fixing the seat.
3.7 Attachment fittings attachment fittings
Bolt and other parts applied to install the seat on the anchorage.
[Definition 3.5, GB 13057-2003]
Foreword I
1 Scope
2 Normative References
3 Terms and Definitions
4 Requirements
4.1 Seat Requirements
4.2 Requirements of Seat Cushions
4.3 Requirements of Seat Anchorages
5 Test Methods
5.1 Dynamic Test for Seats
5.2 Static Load Test
Appendix A (Normative) Requirements of Detecting Instrument
Appendix B (Normative) Determination of Allowable Injury Criterion
