GB 11562-2025 Requirements and measurement methods of light-duty vehicles forward visibility for drivers English, Anglais, Englisch, Inglés, えいご
This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered.
ICS
CCS H
National Standard of the People's Republic of China
GB 11562-2025
Requirements and measurement methods of light-duty vehicles forward visibility for drivers
轻型汽车驾驶员前方视野要求及测量方法
Issue date: 2025-12-31 Implementation date: 2027-01-01
Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
the Standardization Administration of the People's Republic of China
Contents
Foreword
1 Scope
2 Normative References
3 Terms and Definitions
4 Technical Requirements
5 Measurement Conditions
6 Measurement Method for Driver's Forward Field of Vision
7 Determination of the Same Type
8 Implementation of the Standard
Annex A (Normative) Method for Determining the Dimensional Relationship Between Primary Reference Marks and the Three-Dimensional Reference Grid of a Vehicle
Bibliography
Requirements and Measurement Methods for the Forward Field of Vision of Drivers of Light-Duty Vehicles
1 Scope
This document specifies the requirements and measurement methods for the direct forward field of vision within a 180° range in front of the driver.
This document applies to M₁ and N₁ category vehicles.
2 Normative References
The following documents contain provisions which, through normative reference in this text, constitute essential provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB 11555 Technical Specifications for Demisting and Defrosting Systems of Motor Vehicle Windshields
GB/T 29120 Procedure for Determining H-Point and R-Point
GB/T 46926-2025 Technical Requirements and Test Methods for Field of Vision Assistant Systems for Light-Duty Vehicles
3 Terms and Definitions
For the purposes of this document, the terms and definitions given in GB/T 29120 and the following apply.
3.1
three-dimensional reference grid
A coordinate system consisting of the following three orthogonal reference planes determined by the vehicle manufacturer in the initial design stage (see Figure A.1):
X reference plane—a vertical plane passing through the centers of the front wheels and perpendicular to the Y reference plane;
Y reference plane—the longitudinal plane of symmetry of the vehicle;
Z reference plane—a horizontal plane perpendicular to both the Y and X reference planes.
NOTE: The three-dimensional reference grid is used to determine the dimensional relationship between the position of design points on drawings and the position of these points on the actual vehicle.
3.2
primary reference marks
Holes, surfaces, marks, or identification symbols on the vehicle body.
NOTE 1: The type of reference marks used, and the X, Y, Z coordinates of each mark in the three-dimensional reference grid and its position relative to the design ground plane, are specified by the vehicle manufacturer.
NOTE 2: These reference marks can be used as control points for body assembly.
3.3
torso angle
The angle between the lower flat portion of the H-point device backplate and the vertical plane, as viewed from the side.
The angle by which the torso line of the H-point device-II deviates from the vertical.
[SOURCE: GB/T 29120-2012, 3.5]
3.4
design torso angle
The angle measured between the true vertical line through the seating reference point and the torso line.
NOTE: The design torso angle is specified by the manufacturer.
[SOURCE: GB/T 29120-2012, 3.5.2]
3.5
actual torso angle
The angle measured between the true vertical line through the actual H-point and the torso line of the H-point device after it is installed as required.
NOTE 1: In the HPM, the torso angle is measured by the pelvic protractor located below the torso level of the HPM.
NOTE 2: In the HPM-II, the torso angle is measured directly on the torso angle measuring table, or calculated after measuring the marked points H1 and B1.
[SOURCE: GB/T 29120-2012, 3.5.1]
3.6
V points
Reference points used for checking the field of vision, located in the longitudinal vertical plane along the centerline of the outer front seating positions within the passenger compartment.
3.7
R point
The design point, relative to the three-dimensional reference grid, specified by the vehicle manufacturer for each seating position.
3.8
windscreen datum points
The intersection points (a, b, c, a', b', c' – 6 points in total) of rays projected forward from the V points with the outer surface of the windscreen, as shown in Figure 1.
3.9
transparent area
An area of the vehicle windscreen or other transparent surface where the light transmittance (measured with light rays perpendicular to the surface) is not less than 70%.
3.10
P points
Points (including P₁ and P₂, see Figure 2) about which the driver's head rotates when observing a target in the horizontal plane containing the eyes.
3.11
Pm point
The intersection point of the longitudinal vertical plane passing through the R point and the line connecting P₁ and P₂, as shown in Figures 2 and 3.
3.12
E points
Points representing the center of the driver's eyes and used for evaluating the obstruction of the A-pillar field of vision, as shown in Figure 3.
3.13
A-pillars
Roof support members located forward of the transverse vertical plane 68 mm in front of the V points, and their opaque attachments.
3.14
horizontal seat-adjustment range
The normal range for adjusting the driver's seat in the X-axis direction, as specified by the vehicle manufacturer.
3.15
obstruction
Standard
GB 11562-2025 Requirements and measurement methods of light-duty vehicles forward visibility for drivers (English Version)
Standard No.
GB 11562-2025
Status
to be valid
Language
English
File Format
PDF
Word Count
8500 words
Price(USD)
255.0
Implemented on
2027-1-1
Delivery
via email in 1~3 business day
Detail of GB 11562-2025
Standard No.
GB 11562-2025
English Name
Requirements and measurement methods of light-duty vehicles forward visibility for drivers
GB 11562-2025 Requirements and measurement methods of light-duty vehicles forward visibility for drivers English, Anglais, Englisch, Inglés, えいご
This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered.
ICS
CCS H
National Standard of the People's Republic of China
GB 11562-2025
Requirements and measurement methods of light-duty vehicles forward visibility for drivers
轻型汽车驾驶员前方视野要求及测量方法
Issue date: 2025-12-31 Implementation date: 2027-01-01
Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
the Standardization Administration of the People's Republic of China
Contents
Foreword
1 Scope
2 Normative References
3 Terms and Definitions
4 Technical Requirements
5 Measurement Conditions
6 Measurement Method for Driver's Forward Field of Vision
7 Determination of the Same Type
8 Implementation of the Standard
Annex A (Normative) Method for Determining the Dimensional Relationship Between Primary Reference Marks and the Three-Dimensional Reference Grid of a Vehicle
Bibliography
Requirements and Measurement Methods for the Forward Field of Vision of Drivers of Light-Duty Vehicles
1 Scope
This document specifies the requirements and measurement methods for the direct forward field of vision within a 180° range in front of the driver.
This document applies to M₁ and N₁ category vehicles.
2 Normative References
The following documents contain provisions which, through normative reference in this text, constitute essential provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB 11555 Technical Specifications for Demisting and Defrosting Systems of Motor Vehicle Windshields
GB/T 29120 Procedure for Determining H-Point and R-Point
GB/T 46926-2025 Technical Requirements and Test Methods for Field of Vision Assistant Systems for Light-Duty Vehicles
3 Terms and Definitions
For the purposes of this document, the terms and definitions given in GB/T 29120 and the following apply.
3.1
three-dimensional reference grid
A coordinate system consisting of the following three orthogonal reference planes determined by the vehicle manufacturer in the initial design stage (see Figure A.1):
X reference plane—a vertical plane passing through the centers of the front wheels and perpendicular to the Y reference plane;
Y reference plane—the longitudinal plane of symmetry of the vehicle;
Z reference plane—a horizontal plane perpendicular to both the Y and X reference planes.
NOTE: The three-dimensional reference grid is used to determine the dimensional relationship between the position of design points on drawings and the position of these points on the actual vehicle.
3.2
primary reference marks
Holes, surfaces, marks, or identification symbols on the vehicle body.
NOTE 1: The type of reference marks used, and the X, Y, Z coordinates of each mark in the three-dimensional reference grid and its position relative to the design ground plane, are specified by the vehicle manufacturer.
NOTE 2: These reference marks can be used as control points for body assembly.
3.3
torso angle
The angle between the lower flat portion of the H-point device backplate and the vertical plane, as viewed from the side.
The angle by which the torso line of the H-point device-II deviates from the vertical.
[SOURCE: GB/T 29120-2012, 3.5]
3.4
design torso angle
The angle measured between the true vertical line through the seating reference point and the torso line.
NOTE: The design torso angle is specified by the manufacturer.
[SOURCE: GB/T 29120-2012, 3.5.2]
3.5
actual torso angle
The angle measured between the true vertical line through the actual H-point and the torso line of the H-point device after it is installed as required.
NOTE 1: In the HPM, the torso angle is measured by the pelvic protractor located below the torso level of the HPM.
NOTE 2: In the HPM-II, the torso angle is measured directly on the torso angle measuring table, or calculated after measuring the marked points H1 and B1.
[SOURCE: GB/T 29120-2012, 3.5.1]
3.6
V points
Reference points used for checking the field of vision, located in the longitudinal vertical plane along the centerline of the outer front seating positions within the passenger compartment.
3.7
R point
The design point, relative to the three-dimensional reference grid, specified by the vehicle manufacturer for each seating position.
3.8
windscreen datum points
The intersection points (a, b, c, a', b', c' – 6 points in total) of rays projected forward from the V points with the outer surface of the windscreen, as shown in Figure 1.
3.9
transparent area
An area of the vehicle windscreen or other transparent surface where the light transmittance (measured with light rays perpendicular to the surface) is not less than 70%.
3.10
P points
Points (including P₁ and P₂, see Figure 2) about which the driver's head rotates when observing a target in the horizontal plane containing the eyes.
3.11
Pm point
The intersection point of the longitudinal vertical plane passing through the R point and the line connecting P₁ and P₂, as shown in Figures 2 and 3.
3.12
E points
Points representing the center of the driver's eyes and used for evaluating the obstruction of the A-pillar field of vision, as shown in Figure 3.
3.13
A-pillars
Roof support members located forward of the transverse vertical plane 68 mm in front of the V points, and their opaque attachments.
3.14
horizontal seat-adjustment range
The normal range for adjusting the driver's seat in the X-axis direction, as specified by the vehicle manufacturer.
3.15
obstruction
