GB/T 13053-2025 Bus inner dimensions English, Anglais, Englisch, Inglés, えいご
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ICS 43.080.20 CCS T 42
People's Republic of China National Standard
GB/T 13053-2025 Replacing GB/T 13053-2008
Bus Inner Dimensions
Issued on August 29, 2025; Implemented on March 1, 2026
Issued by State Administration for Market Regulation Standardization Administration of China
Contents
Foreword
1 Scope
2 Normative References
3 Terms and Definitions
4 Parameter Names, Codes, and Reference Values
Appendix A (Informative) Vehicle Coordinate System and Parameter Illustrations
References
Bus Inner Dimensions
1 Scope
This document specifies the parameter names, codes, and reference values for the inner dimensions of the driver's area and passenger area in buses.
This document applies to Class M2 and M3 buses.
This document does not apply to sleeper buses, special-purpose buses, and buses not intended for road use.
2 Normative References
The following documents contain provisions which, through reference in this text, constitute provisions of this document. For dated references, subsequent amendments (excluding勘误表) or revisions to these documents do not apply. For undated references, the latest edition of the document (including any amendments) applies.
GB/T 12428 Calculation method for load capacity of buses
GB/T 15089 Classification of motor vehicles and trailers
GB/T 15759-2023 Requirements for the design and use of human body templates
3 Terms and Definitions
The terms and definitions established in GB/T 15089 and GB/T 15759-2023, as well as the following terms and definitions, apply to this document.
3.1
Vehicle Coordinate System
A system consisting of three mutually orthogonal vertical planes used to determine the position relationship of planes, axes, and points.
Note: See Figure A.1 in Appendix A.
3.2
Zero Y-Plane
The longitudinal symmetrical plane of the vehicle specified by the manufacturer.
Note: See Figure A.1 in Appendix A.
3.3
Zero Z-Plane
A plane parallel to the upper surface of the bus chassis and perpendicular to the zero Y-plane, specified by the manufacturer.
Note: See Figure A.1 in Appendix A.
3.4
Zero X-Plane
A plane passing through the center of the front wheels and perpendicular to the zero Y-plane and zero Z-plane, specified by the manufacturer.
Note: See Figure A.1 in Appendix A.
3.5
Y-Plane
A plane parallel to the zero Y-plane.
3.6
Z-Plane
A plane parallel to the zero Z-plane.
3.7
X-Plane
A plane parallel to the zero X-plane.
4 Parameter Names, Codes, and Reference Values
4.1 Dimension Parameters, Codes, and Reference Values for Measurement
4.1.1 The code for dimension parameters consists of letters and numbers, where the letter indicates the type of parameter, and the number indicates the sequence number of the dimension parameter. The correspondence between letter codes and parameter types is shown in Table 1.
Table 1 Correspondence Between Letter Codes and Parameter Types
4.1.2 The reference values in this document are design dimensions, and measurements shall comply with the following requirements:
a) When the steering wheel angle is adjustable or the height is adjustable, the steering wheel shall be in the design intermediate position specified by the manufacturer.
b) The driver's seat shall be in the design reference position, with the backrest at the design backrest angle, and the passenger seat shall be in the design reference position.
c) The two-dimensional human body design templates used shall be the Level 3 model specified in GB/T 15759-2023.
4.2 Non-Dimension Parameters and Codes
The code for non-dimension parameters is their English abbreviation. The parameter names, descriptions, and codes are shown in Table 2.
Table 2 Non-Dimension Parameter Names, Descriptions, and Codes
