GB 19152-2025 Road illumination devices for motorcycles and mopeds
1 Scope
This document specifies the classification and type determination, technical requirements, and inspection rules for road illumination devices for motorcycles and mopeds, and describes the corresponding test methods.
This document is applicable to road illumination devices such as passing-beam headlamps, driving-beam headlamps, and adaptive driving-beams (ADBs) for motor vehicles of Categories L1 to L5.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions 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 4785 Prescription for installation of the external lighting and light-signalling devices for motor vehicles and their trailers
GB 18100 Provisions for the installation of lighting and light-signalling devices for motorcycles and mopeds
UN R37 Uniform provisions concerning the approval of filament lamps for use in approved lamp units of power-driven vehicles and of their trailers
UN R99 Uniform provisions concerning the approval of gas-discharge light sources for use in approved gas-discharge lamp units of power-driven vehicles
UN R128 Uniform provisions concerning the approval of light emitting diode (LED) light sources for use in approved lamp units on power-driven vehicles and their trailers
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB 4785 and GB 18100 as well as the following apply.
3.1
road illumination device
a unit or group of units used to illuminate the road and objects in the direction of vehicle forward motion, fulfilling one or more functions
Note: Road illumination devices include passing-beam headlamps, driving-beam headlamps, and adaptive driving-beams (ADBs), as well as additional lighting units.
3.2
additional lighting unit
component of a road illumination device that primarily provides bend lighting function for motorcycles
Note: Additional lighting units typically consist of optical, mechanical, and electrical components.
3.3
secondary driving-beam
driving-beam headlamp that works in conjunction with the passing-beam headlamp to achieve driving-beam illumination effects
4 Classification and type determination of road illumination devices
4.1 Classification of headlamps
4.1.1 For headlamps emitting a symmetrical passing-beam and/or driving-beam, the passing-beam classification shall be Class BS, CS, or DS, while the driving-beam classification shall be Class BS, or Class CS or DS secondary driving-beam, and the use of Class A or B driving-beam is also allowed.
4.1.2 For headlamps emitting an asymmetrical passing-beam and/or driving-beam, the passing-beam classification shall be Class V or C, while the driving-beam classification shall be Class A or B.
4.2 Determination of the same type for headlamps
Devices are considered to be of the same type if they have no differences in the following main characteristics:
——Manufacturer;
——Quantity, type, luminous principle, and light source module structure of replaceable or non-replaceable light sources used;
——Quantity and structure of main optical elements (e.g., reflectors, lenses, and light guides);
——Outer lens and coating materials;
——Class.
5 Technical requirements
5.1 General
5.1.1 General provisions
Headlamps shall be designed and manufactured such that they meet operational requirements and comply with the provisions of this document under normal use conditions, even when subjected to vibrations.
5.1.2 Beam adjustment device
Passing-beam and driving-beam headlamps shall be equipped with a beam adjustment device. When passing-beam and driving-beam headlamps are grouped to form grouped lamps, the adjustment device shall enable separate adjustment of them, unless separate adjustment is not possible due to factors such as a shared adjustment mechanism or reflector among them. For symmetrical passing-beams, if a good aiming can be maintained in the horizontal direction after vertical adjustment, provision of horizontal adjustment function is not required.
If the aforementioned adjustments are achieved through other means on the vehicle, installation of such an adjustment device is not required.
5.1.3 Beam switching device
For headlamp systems designed to alternately emit driving-beam and passing-beam, or incorporate additional light sources and/or additional lighting units for bend lighting, any mechanical, electromechanical, or other devices within the headlamp used for beam switching shall meet the following requirements:
a) The shape and position of movable components shall not be alterable by the user using common tools;
b) When switching between driving-beam and passing-beam using a mechanical device, the mechanical device shall enable switching to either passing-beam or driving-beam at any time, and shall not remain in an intermediate or uncertain position;
c) For headlamps emitting a symmetrical passing-beam, in the event of a fault (except for additional light sources/additional lighting units providing bend lighting), the headlamp shall automatically be positioned to obtain passing-beam, or alternatively, its photometric characteristics shall be ensured by means such as turning off, reducing luminous intensity, downward inclination, and/or functional substitution, so that the luminous intensity in Area 1 is not greater than 1.2×103 cd, and the luminous intensity at Point V-0.86D is not less than 2.4×103 cd;
d) For headlamps emitting an asymmetrical passing-beam, in the event of a fault, the luminous intensity above Line H-H shall meet the requirements of 5.7.3. Furthermore, for headlamps designed to produce bend lighting with passing-beam and/or driving-beam, the minimum luminous intensity at Point 25V shall reach 2.5×103 cd.
5.1.4 Markings and centres of reference
5.1.4.1 Markings
Contents
Foreword III
1 Scope
2 Normative references
3 Terms and definitions
4 Classification and type determination of road illumination devices
4.1 Classification of headlamps
4.2 Determination of the same type for headlamps
5 Technical requirements
5.1 General
5.2 Light color and chromaticity
5.3 Light source requirements
5.4 Stability of photometric characteristics of headlamps
5.5 Headlamps with plastic lens
5.6 Headlamps with LED light sources/modules
5.7 Photometric characteristics
6 Test methods
6.1 General requirements for test darkrooms and equipment
6.2 Voltage during photometric and chromaticity testing
6.3 Aiming during photometric testing
6.4 Headlamps grouped or reciprocally incorporated with front position lamps
6.5 Headlamps with adjustable reflectors
6.6 Inspection of bend lighting device
6.7 Chromaticity inspection
6.8 Test methods for other items
7 Inspection rules
7.1 Type inspection
7.2 Conformity of production inspection
8 Implementation of the standard
Annex A (Normative) Markings
Annex B (Normative) Centre-of-reference marking
Annex C (Normative) Requirements for LED light sources/modules and LED headlamps
Annex D (Normative) Stability test for photometric characteristics of headlamps
Annex E (Normative) Requirements for headlamps with plastic lenses - Tests on lenses or material specimens and complete lamps
Annex F (Normative) Aiming and quality requirements for cut-off lines of headlamps with symmetrical passing-beam
Annex G (Normative) Aiming and quality requirements for cut-off lines of headlamps with asymmetrical passing-beam
Annex H (Normative) Lighting methods for stability test for photometric characteristics
Annex I (Normative) Test procedures for lenses or material specimens and complete lamps of headlamps with plastic lenses
Annex J (Normative) Measurement methods for diffused light and transmitted light
Annex K (Normative) Mechanical wear test method
Annex L (Normative) Adhesion test of adhesive tape
GB 19152-2025 Road illumination devices for motorcycles and mopeds
1 Scope
This document specifies the classification and type determination, technical requirements, and inspection rules for road illumination devices for motorcycles and mopeds, and describes the corresponding test methods.
This document is applicable to road illumination devices such as passing-beam headlamps, driving-beam headlamps, and adaptive driving-beams (ADBs) for motor vehicles of Categories L1 to L5.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions 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 4785 Prescription for installation of the external lighting and light-signalling devices for motor vehicles and their trailers
GB 18100 Provisions for the installation of lighting and light-signalling devices for motorcycles and mopeds
UN R37 Uniform provisions concerning the approval of filament lamps for use in approved lamp units of power-driven vehicles and of their trailers
UN R99 Uniform provisions concerning the approval of gas-discharge light sources for use in approved gas-discharge lamp units of power-driven vehicles
UN R128 Uniform provisions concerning the approval of light emitting diode (LED) light sources for use in approved lamp units on power-driven vehicles and their trailers
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB 4785 and GB 18100 as well as the following apply.
3.1
road illumination device
a unit or group of units used to illuminate the road and objects in the direction of vehicle forward motion, fulfilling one or more functions
Note: Road illumination devices include passing-beam headlamps, driving-beam headlamps, and adaptive driving-beams (ADBs), as well as additional lighting units.
3.2
additional lighting unit
component of a road illumination device that primarily provides bend lighting function for motorcycles
Note: Additional lighting units typically consist of optical, mechanical, and electrical components.
3.3
secondary driving-beam
driving-beam headlamp that works in conjunction with the passing-beam headlamp to achieve driving-beam illumination effects
4 Classification and type determination of road illumination devices
4.1 Classification of headlamps
4.1.1 For headlamps emitting a symmetrical passing-beam and/or driving-beam, the passing-beam classification shall be Class BS, CS, or DS, while the driving-beam classification shall be Class BS, or Class CS or DS secondary driving-beam, and the use of Class A or B driving-beam is also allowed.
4.1.2 For headlamps emitting an asymmetrical passing-beam and/or driving-beam, the passing-beam classification shall be Class V or C, while the driving-beam classification shall be Class A or B.
4.2 Determination of the same type for headlamps
Devices are considered to be of the same type if they have no differences in the following main characteristics:
——Manufacturer;
——Quantity, type, luminous principle, and light source module structure of replaceable or non-replaceable light sources used;
——Quantity and structure of main optical elements (e.g., reflectors, lenses, and light guides);
——Outer lens and coating materials;
——Class.
5 Technical requirements
5.1 General
5.1.1 General provisions
Headlamps shall be designed and manufactured such that they meet operational requirements and comply with the provisions of this document under normal use conditions, even when subjected to vibrations.
5.1.2 Beam adjustment device
Passing-beam and driving-beam headlamps shall be equipped with a beam adjustment device. When passing-beam and driving-beam headlamps are grouped to form grouped lamps, the adjustment device shall enable separate adjustment of them, unless separate adjustment is not possible due to factors such as a shared adjustment mechanism or reflector among them. For symmetrical passing-beams, if a good aiming can be maintained in the horizontal direction after vertical adjustment, provision of horizontal adjustment function is not required.
If the aforementioned adjustments are achieved through other means on the vehicle, installation of such an adjustment device is not required.
5.1.3 Beam switching device
For headlamp systems designed to alternately emit driving-beam and passing-beam, or incorporate additional light sources and/or additional lighting units for bend lighting, any mechanical, electromechanical, or other devices within the headlamp used for beam switching shall meet the following requirements:
a) The shape and position of movable components shall not be alterable by the user using common tools;
b) When switching between driving-beam and passing-beam using a mechanical device, the mechanical device shall enable switching to either passing-beam or driving-beam at any time, and shall not remain in an intermediate or uncertain position;
c) For headlamps emitting a symmetrical passing-beam, in the event of a fault (except for additional light sources/additional lighting units providing bend lighting), the headlamp shall automatically be positioned to obtain passing-beam, or alternatively, its photometric characteristics shall be ensured by means such as turning off, reducing luminous intensity, downward inclination, and/or functional substitution, so that the luminous intensity in Area 1 is not greater than 1.2×103 cd, and the luminous intensity at Point V-0.86D is not less than 2.4×103 cd;
d) For headlamps emitting an asymmetrical passing-beam, in the event of a fault, the luminous intensity above Line H-H shall meet the requirements of 5.7.3. Furthermore, for headlamps designed to produce bend lighting with passing-beam and/or driving-beam, the minimum luminous intensity at Point 25V shall reach 2.5×103 cd.
5.1.4 Markings and centres of reference
5.1.4.1 Markings
Contents of GB 19152-2025
Contents
Foreword III
1 Scope
2 Normative references
3 Terms and definitions
4 Classification and type determination of road illumination devices
4.1 Classification of headlamps
4.2 Determination of the same type for headlamps
5 Technical requirements
5.1 General
5.2 Light color and chromaticity
5.3 Light source requirements
5.4 Stability of photometric characteristics of headlamps
5.5 Headlamps with plastic lens
5.6 Headlamps with LED light sources/modules
5.7 Photometric characteristics
6 Test methods
6.1 General requirements for test darkrooms and equipment
6.2 Voltage during photometric and chromaticity testing
6.3 Aiming during photometric testing
6.4 Headlamps grouped or reciprocally incorporated with front position lamps
6.5 Headlamps with adjustable reflectors
6.6 Inspection of bend lighting device
6.7 Chromaticity inspection
6.8 Test methods for other items
7 Inspection rules
7.1 Type inspection
7.2 Conformity of production inspection
8 Implementation of the standard
Annex A (Normative) Markings
Annex B (Normative) Centre-of-reference marking
Annex C (Normative) Requirements for LED light sources/modules and LED headlamps
Annex D (Normative) Stability test for photometric characteristics of headlamps
Annex E (Normative) Requirements for headlamps with plastic lenses - Tests on lenses or material specimens and complete lamps
Annex F (Normative) Aiming and quality requirements for cut-off lines of headlamps with symmetrical passing-beam
Annex G (Normative) Aiming and quality requirements for cut-off lines of headlamps with asymmetrical passing-beam
Annex H (Normative) Lighting methods for stability test for photometric characteristics
Annex I (Normative) Test procedures for lenses or material specimens and complete lamps of headlamps with plastic lenses
Annex J (Normative) Measurement methods for diffused light and transmitted light
Annex K (Normative) Mechanical wear test method
Annex L (Normative) Adhesion test of adhesive tape
