GB 17510-2025Light-signaling devices for motorcycles and mopeds (English PDF)

3.1 light-signaling device

A unit or group of units used to emit light signals to other road users to indicate the presence of a vehicle or a change in its motion state, and to perform one or more functions. […]

5.1 General requirements

5.1.1 The device should be designed and manufactured so that, under normal conditions of use, it can still meet the requirements of use and comply with the provisions of this document even if it is subjected to vibration.

5.1.2 Light-signaling devices with illuminated logos meet the following requirements.

a) Luminous logos should be part of the light signal device and the light color must be consistent. Brake lights, turn signal lights and reverse lights should not have luminous logos. There should be no more than two luminous logos installed facing forward or rearward. The light-transmitting surface of the luminous logo itself may be asymmetrical.

c) When the luminous logo is not illuminated, the light-signaling device shall also meet its corresponding photometric and chromaticity requirements.

5.2.1 Front/rear position lamps that are mixed with other functions and use the same light source may be designed to operate in conjunction with an additional system for regulating luminous intensity. In this case, for rear position lamps that share a light source with the brake lamp, multiple light sources should be connected in parallel, or the function should be equipped with a fault monitoring system.

5.2.2 If the front position lamp contains one or more infrared radiation generators, the photometric and chromaticity of the front position lamp shall meet the requirements regardless of whether the infrared radiation generator is operating or not.

5.3 Requirements for turn signal lights

5.3.1 Front turn signal lamps are classified into categories 11, 11a, 11b, and 11c based on their light distribution levels. Rear turn signal lamps are classified into category 12. […]

5.3.2 Sequential opening meets the following requirements.

a) After each light source is activated, it should remain on until the lighting cycle ends. The sequential lighting change process should end within 200 ms after the lighting cycle begins. the outside of the light-transmitting surface at a uniform speed. […]

5.4 Requirements for rear license plate lighting

5.5 Light source requirements

5.5.1 Replaceable light source

6.3 Requirements for the inter-storage light system

6.3.1 When all devices in the system are lit, the light distribution performance requirements of a single lamp should be met.

6.3.2 For a rear position lamp inter-lamp system that is partially mounted on a fixed component and partially mounted on a movable component, the entire inter-lamp system shall meet the requirements of 6.1.2 in all normal use positions on the movable component. However, the minimum luminous intensity inside the light distribution angle range in Annex A may not meet the requirements of 6.1.2.

7.1 Requirements for test chamber, device and equipment

7.1.4 The illuminometer should be a Class 1 illuminometer specified in the national verification regulations. The luminance meter should be a Class 1 luminance meter specified in the national verification regulations. 7.1.6 When viewed from the reference center of the device, the angle of the optical receiver should be between 10'~1°. 7.1.8 Luminance measurements of the rear license plate lighting system should be conducted on a white diffuse reflective surface with a known diffuse reflectance. The measured luminance values should be linearly corrected to a diffuse reflectance of 1. […]

7.2.1 Test voltage requirements for non-replaceable light sources

7.2.1.1 For devices that directly use the vehicle voltage, the light source in the device should be used for testing at a test voltage of 13. […]

7.2.2 Test voltage requirements for replaceable light sources

7.2.2.1 When using multiple replaceable light sources, the product light source may be used to measure photometric performance at 13.5 V. The resulting luminous intensity value must be corrected. The correction factor is the ratio of the reference luminous flux (for filament light sources) or target luminous flux (for LED light sources) to the average luminous flux at the test voltage. The actual luminous flux of each light source used must deviate from its average by no more than 5%. When using only filament light sources, measurements may be performed at each bulb position using a standard bulb operating at the reference luminous flux setting. The individual measurement results for each position must be summed. 7.2.2.2 For devices not powered by electric light source controllers, the standard light sources specified in UN R37 and UN R128 should be used and tested in accordance with the following methods: a) For filament light sources, measure at a reference luminous flux. and apply a correction. The correction factor is the ratio of the target luminous flux to the luminous flux at the aforementioned test voltage. 7.2.2. […]

8.1 Type inspection

8.1.1 Materials and samples to be provided by the manufacturer

8.1.1.1 Drawings sufficient to identify the type of device, indicating at least the geometric position of the device on the vehicle, including the reference axis (H=0°, V=0°), reference center, illuminated logo (if any), and information on the interchangeable lamp system or "D" type lamp (if any).

8.1.1.2 A concise technical specification should include the following contents.

b) If the device has different mounting positions or angles on the vehicle (e.g., the reference axis relative to the vehicle's reference plane, the angle relative to the ground, or the reference axis of the device itself).

1) If a filament light source is used, provide its type as listed in UN R37;

2) If a replaceable LED light source is used, provide its type as listed in UN R128;

3) If a light source module is used, provide its type and parameters, which may include the LED module's specifications, dimensions, optoelectronic parameters, and target luminous flux.

or input conditions for the device's operation should be provided.

f) Whether the installation is equipped with an operating indicator or fault monitoring function.

a) Two sample lamps (including light sources). If the devices are symmetrical, functionally identical, and installed on either side of the vehicle, the sample lamps may be two identical samples, or one on each side. For front or rear position lamps containing illuminated emblems that are asymmetrical with respect to the vehicle's longitudinal plane of symmetry, only one on each side may be required.

b) Electric light source controller (if any).

8.1.2 Type inspection requirements

Carry out the test in accordance with the provisions of Chapter 7. The sample lamp should comply with the corresponding provisions of Chapter 5 and Chapter 6.