UN R79: Proposal for Supplement 2 to 03 series of amendments
Document GRVA/2019/19
10 July 2019

Proposal to amend the draft text (GRVA/2019/9) submitted 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).

Submitted by France, Germany, Japan, and Korea
Status: Superseded
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Previous Documents, Discussions, and Outcomes
4.8.2. | Proposal for Supplement 2 to the 02 series of amendments to UN Regulation No. 79 (Steering equipment)
4.8.3. | Proposal for Supplement 3 to the 03 series of amendments to UN Regulation No. 79 (Steering equipment)
4.7. | Consideration of draft amendments to existing UN Regulations submitted by GRVA
5. (d) | Automatically Commanded Steering Function

35. The expert from France introduced ECE/TRANS/WP.29/GRVA/2019/9 based on GRRF-86-13 proposing clarifications of the Annex 8 testing provisions. The proposal received some comments from Japan, France, Germany and OICA. The expert from France agreed with the suggestion of GRVA to submit a revised proposal with more data for consideration at the September 2019 session. The experts from Japan, Germany and OICA were invited to share with GRVA their test data, supporting their positions.

9. (a) | Steering equipment: Regulation No. 79
9. (b) | Steering equipment: Automatically Commanded Steering Function

48. The expert from Germany presented GRRF-86-13 tabled by the experts from Germany and from the Republic of Korea with a proposal for amendments to the ACSF testing provisions in Annex 8 of UN Regulation No. 79, based on the first experience gathered since the 02 series of amendments of UN Regulation No. 79 entered into force. GRRF welcomed the proposal and provided comments. The experts from Germany and the Republic of Korea volunteered to prepare a revised proposal aimed to avoid prescriptive requirements on the measurement instruments and providing more detailed justification e.g. on the sample rate and the filtering of the lateral acceleration data.

9. (c) | Steering equipment: Complex Electronic (CEL) control system requirements
Related and Previous Documents
GRRF-86-13
GRVA-02-33
GRVA/2019/9
GRVA-04-09
GRVA-04-47
GRVA-04-46
WP.29/2020/11
WP.29/2020/66
Relates to UN R79 |