Document WP.29/2020/66
UN R79: Proposal for Supplement 2 to the 02 series of amendments
Status: Adopted

Proposal to resolve measurement concerns in the test requirements for ACSF of Category B1 and C by introducing provisions for tolerances, including:

  1. inclusion of the position at which the lateral acceleration was measured and the position of the centre of gravity of the vehicle for better traceablility,
  2. sampling rate of at least 100 Hz for dynamic testing,
  3. specification of filters and cut-off frequency for determination of lateral acceleration,
  4. option to measure “overriding force” torque via an internal sensor or an external device (e.g., steering robot).

The proposal also would modify the high-speed test to end once the system has given an optical “hands-off” warning since the entire warning cascade is checked during the low-speed test. For M2 and M3 vehicles, the amendment allows a corrective steering function to use haptic signals as an alternative to acoustic signals for these categories of vehicles that are equipped with Lane Departure Warning System compliant with UN R130. This change would specify that the haptic warning may not be given solely via the steering wheel (e.g., provided in the driver’s seat).

Discussions and Outcomes
181st WP.29 session (24 Jun 2020)
This proposal (WP.29/2020/66) was adopted by the World Forum. Thirty-eight Contracting Parties out of the 46 applying UN R79 were present for the vote by AC.1. Thirty-eight voted in favor with zero against and zero abstaining.
5th GRVA session (10-14 Feb 2020)
GRVA/2020/10
GRVA/2020/11

46. The expert from CLEPA introduced ECE/TRANS/WP.29/GRVA/2020/10, proposing amendments to the provisions applicable to ACSF of Category B. GRVA adopted the proposal as draft supplements to the 02 and the 03 series of amendments to UN Regulation No. 79 and requested the secretariat to submit them to WP.29 and AC.1 for consideration and vote at their June 2020 sessions.

52. The expert from OICA introduced ECE/TRANS/WP.29/GRVA/2020/11, proposing amendments to the warning provisions applicable to Corrective Steering Function for buses equipped with Lane Warning Departure Warning (LDWS). GRVA adopted the proposal as draft supplements for the 02 and 03 series of amendments to UN Regulation No. 79 and requested the secretariat to submit it for consideration and vote to WP.29 and AC.1 at their June 2020 sessions.

4th GRVA session (24-27 Sep 2019)
GRVA/2019/19

33. The expert from France introduced ECE/TRANS/WP.29/GRVA/2019/19 proposing amendments to UN Regulation No.79 based on experience gathered by France, Germany and the Republic of Korea since the entry into force of the 03 series. The proposal received comments (see GRVA-04-09, GRVA-04-46). GRVA adopted the proposal as amended (GRVA-04-47) as reproduced in Annex III, as supplement to the 03 series of amendments to UN Regulation No.79 and requested the secretariat to submit it to WP.29 and AC.1, for consideration and vote at their March 2020 sessions.