Proposal to render optional the fitment of front position lamps where the motorcycle is fitted with automatic headlamp switching or daytime running lamps meeting certain conditions and to add provisions regarding electrical connections and the activation of simultaneous lamps (e.g., to permit activation of rear lamps before the front lamps are activated).

Proposal to align the 03 series of amendments to UN R53 (as adopted during GRE-81: GRE/2018/50, as amended by GRE/2019/12) with the latest proposals for amendments to the 01 and 02 series (as adopted by GRE but not yet in force at the time of the present proposal:

1. Add references to UN R148, R149, and R150 (WP.29/2018/104/Rev.1 as amended by WP.29-177-07, and WP.29/2018/105), implementing the change index and amending the definitions (taking into consideration informal document GRE-80-05),
2. Align UN R53 with UN R148 regarding the inward geometric visibility requirements for rear position lamps (GRE/2018/28),
3. Clarify the use of direction indicators to show the status of the device for protection of a vehicle against unauthorised use and allow exterior courtesy lamps to be fitted on motorcycles (WP.29/2019/17 as amended by para. 107 of the session report and WP.29/2019/18 as amended by para. 108),
4. Align UN R53 with UN R48 and correct a mistake in a previous amendment process (WP.29/2018/86/Rev.1 andWP.29/2018/87/Rev.1),
5. Allow the use of different stop lamp activation methods, aligning the definition of “stop lamp” with UN R48 (GRE/2018/29), and
6. Introduce requirements for light emitting diode (LED) substitute light sources (GRE/2018/41).

Proposal to enable the approval of Category L₃ equipped with adaptive driving beam (ADB) headlamps under UN R53 and R149.

Proposal to remove restrictions on the installation of lighting devices on L₁ and L₃ category vehicles that are permitted for M, N, and T category vehicles.

Proposal to clarify the content of GRE/2019/23, aimed at ensuring that the new 03 series of amendments to UN Regulation No. 53 contains the latest proposals adopted by GRE regarding preceding series.

Comparison of adaptive driving beam provisions between the current UN Regulation No. 48 and the proposal for amendments to UN Regulation No. 53 (GRE-82-13).

Proposal to rectify the transitional period for recently amended provisions applicable to the installation of lighting and light-signalling devices for L3 vehicles.

Comments particularly with regard to the transitional provisions for the 03 series of amendments.

In the leaning condition, the operation of the ADB lamp and its effect do not change from the non-leaning condition which turns off the segment where a camera has detected preceding and/or oncoming vehicle(s).Therefore, there is no additional requirement for the leaning condition.