UN R79: Proposal to amend GRVA/2023/6
Document GRVA-15-09
6 January 2023

Proposal to prevent activation of an Automatically Commanded Steering Function of Category C for a minimum of [10] seconds after the system has verified that the road is of a valid type when merging into a roadway. The activation delay of [10] seconds prevents the system from being used during merging from the motorway’s acceleration lane. According to the proposal, the merging process during the acceleration phase is not fully suitable for an automated lane change due to, among other things, the vehicle dynamics and the limited space available. In addition, the delay shifts the driver’s notification of the automatic activation of the ACSF-C system to a time when the vehicle is already in a stable driving condition on the motorway and the driver’s attentional resources are more available to receive the notification. A manual activation of the system remains possible.

Submitted by Germany
Status: Superseded
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Previous Documents, Discussions, and Outcomes
6. (b) | UN Regulation No. 79 (Steering equipment)

94. The expert from OICA offered to withdraw ECE/TRANS/WP.29/GRVA/2011/9, even though the content of the proposal was still relevant and important for his organization. Similarly, the expert from AVERE withdrew ECE/TRANS/WP.29/GRVA/2021/10. GRVA agreed that the Task Force on ADAS would aim at addressing the matters, too.

95. The expert from OICA introduced ECE/TRANS/WP.29/GRVA/2023/6, as amended by GRVA-15-30. He recalled the context of the proposal, already discussed at the fourteenth session of GRVA. He mentioned that their proposal received comments (GRVA-15-09) and that he addressed them with the amendment included in GRVA-15-52. The secretariat read the letter of the expert from Sweden, absent, who expressed support for ECE/TRANS/WP.29/GRVA/2023/6, as amended by GRVA-15-09.

96. The expert from OICA presented GRVA-15-53 with further provisions for an automatic change to a standby mode. GRVA agreed that a “suitable time delay” was one option to ensure that the vehicle has already reached a regular lane of travel, but GRVA could not identify a fixed time value and therefore agreed that such value could be subject to agreement between the manufacturer and the technical service during the approval process.

97. Following discussions, GRVA reached agreement on GRVA-15-54 and agreed to note in this report the justification and context related to GRVA-15-53, as summarized in para. 96 above.

98. GRVA adopted ECE/TRANS/WP.29/GRVA/2023/6, as amended by GRVA-15-54, and requested the secretariat to submit it as a supplement to the 03 series and 04 series of amendments to UN Regulation No. 79 (steering equipment) to WP.29 and AC.1 for consideration and vote at their June 2023 sessions.

Related and Previous Documents
GRVA/2023/6
GRVA-15-54
Relates to UN R79 |