21. The expert of GTB introduced revised proposals for amendments to UN Regulations Nos. 48 and 149 on road projections of driver assistance symbols as well as supporting material (ECE/TRANS/WP.29/GRE/2020/4/Rev.1, GRE-84-24, GRE-84-25, GRE-84-26, GRE-84-27 and GRE-84-38-Rev.1). During an in-depth discussion, experts from Contracting Parties generally supported the concept but expressed several concerns over the proposed technical requirements. The expert from Japan presented their list of outstanding issues (GRE-84-36).

22. GRE requested GTB and OICA to liaise with all experts concerned with the aim to submit a revised proposal to the next session. GRE also invited other experts from Contracting Parties to send their comments to GTB and OICA and to take part in preparatory online meetings to be organized by GTB.

23. The expert of GTB tabled a proposal which allowed for projection of driver assistance symbols on the road ahead of the vehicle, as part of the adaptive driving beam (ADB). This proposal was submitted in a package with an amendment to UN Regulation No. 149 (ECE/TRANS/WP.29/GRE/2020/4 and GRE-83-30). The expert from OICA presented supporting material for the proposal (GRE-83-33 and GRE-83-34), while the experts from Japan expressed concerns identified in the course of their own study (GRE-83-49). Other experts also expressed various views and concerns, such as the need for possible restrictions and standardization of the projected symbols, and that distraction must be avoided. Based on the comments received and pending further studies on the issue, GRE requested GTB to submit a revised document to the next session and invited all interested parties to contribute. Meanwhile, GRE asked the expert from Finland to liaise with the Working Party on General Safety Provisions (GRSG) which had established a Task Force on Field of Vision Assistant.