From the date of implementation of this standard, the light signal devices and systems used in the new type approval automobiles and trailers such as front lights, rear position lights, turn signal lights, profile lights, parking lights, daytime running lights, rear license plate lighting devices, rear fog lights, slow running lights, side sign lights, and light signal projection units shall be implemented in accordance with this document.

The reversing lights and brake lights for new type approval shall be implemented from the 19th month from the date of implementation of this document.

For automobile and trailer optical signaling devices and systems that have passed type approval, they will be implemented from the 37th month from the date of implementation of this document.

For models that have newly applied for type approval, it will be implemented from the 37th month from the date of implementation of this document.

For models that have received type approval, it will be implemented from the 37th month from the date of implementation of this document.

7. GB 5920-2024 Signal light devices and systems need to make up for the difference: