Proposal for amendments to the requirements for Automatically Commanded Steering Functions (ACSF) of Category C, introducing specific provisions for the use of a lane change function with a two-step Human Machine Interface (HMI).

37. The expert from OICA introduced GRVA-02-24 (based on ECE/TRANS/WP.29/GRVA/2018/2), proposing to insert in the Regulation some provisions for ACSF of Category C with a two-step Human Machine Interface (HMI) approach. The expert from the Netherlands disagreed with the proposed seven seconds as the time during which the second deliberate action by the driver should take place while this time for the one-step HMI approach (latest time by which an automatic initiation should occur), already in force, is limited to five seconds. The expert from France supported the proposal and showed flexibility on the seven seconds value to reach consensus among CPs. The expert from Germany asked whether this proposal would allow one single vehicle to be equipped with both a one-step HMI and a two-step HMI and how the combination of both would work. GRVA invited OICA to consider the issues raised by the experts and requested the secretariat to distribute the proposal with an official symbol for review at its September 2019 session.

36. The expert from OICA presented GRVA-04-03, introducing ECE/TRANS/WP.29/GRVA/2019/24 proposing an alternative Human Machine Interface (HMI) for ACSF of Category C. The proposal received comments (and GRVA extended the discussion after the end of the official meeting time, without interpretation and without decisions or conclusions).

37. Following further discussion, GRVA adopted the proposal as amended (GRVA-04-43) and reproduced in Annex IV. GRVA requested the secretariat to submit it to WP.29 and AC.1, for consideration and vote at their March 2020 sessions.

Proposal to introduce provisions for a “two-step Human Machine Interface” in the requirements for Automatically Commanded Steering Functions (ACSF) of Category C lane-change functions.

36. The expert from OICA presented GRVA-04-03, introducing ECE/TRANS/WP.29/GRVA/2019/24 proposing an alternative Human Machine Interface (HMI) for ACSF of Category C. The proposal received comments (and GRVA extended the discussion after the end of the official meeting time, without interpretation and without decisions or conclusions).

37. Following further discussion, GRVA adopted the proposal as amended (GRVA-04-43) and reproduced in Annex IV. GRVA requested the secretariat to submit it to WP.29 and AC.1, for consideration and vote at their March 2020 sessions.

The proposed text combines the proposed changes in GRVA/2020/8 (proposal for a maximum time of 15 seconds for a lane change) with the adopted changes in GRVA/2019/24.

43. The expert from AVERE introduced ECE/TRANS/WP.29/GRVA/2020/7 and ECE/TRANS/WP.29/GRVA/2020/8 (and their respective amendments in GRVA-05-08 and GRVA-05-24), proposing amendments to the ACSF provisions, resuming the discussion started in September 2019. He mentioned the support provided by the expert from the United Kingdom. The experts from Sweden and France provided comments. The experts from Denmark, Finland, the Netherlands and Norway expressed concerns. The expert from the Netherlands explained that the dynamics problems reported by the manufacturer, member of AVERE, were not due to the provisions in the Regulation but were due to design choices made by this manufacturer. The experts from the European Commission, Korea and United Kingdom and Northern Ireland supported the proposals; the expert from OICA, too. The expert from the Russian Federation proposed alternative proposals (GRVA-05-59) improving the text. The expert from the United Kingdom proposed GRVA-05-57 aimed at addressing the comments expressed by the expert from Sweden. GRVA reviewed all revised proposals produced by the expert from AVERE during the week but remained divided. GRVA agreed to review a revised proposal at the sixth session of GRVA, if time allows.

44. The Chair of GRVA noted the division of GRVA on this matter. He proposed that GRVA performs a general review of the Regulation at its September 2020 session.

Proposal combining the proposed changes of GRVA/2020/9 with the previously adopted changes in GRVA/2019/24.

45. The expert from AVERE introduced ECE/TRANS/WP.29/GRVA/2020/9 as amended by GRVA-05-09. The proposal received comments (GRVA-05-58). The expert from the Netherlands expressed concerns with the proposal as the proposed amendment did not improve safety. GRVA adopted the proposal as reproduced in Annex IV of the session report (based on GRVA-05-09-Rev.3) and requested the secretariat to submit it to WP.29 and AC.1 as a supplement to the 03 series of amendments to UN Regulation No. 79 for consideration and vote at their June 2020 sessions.

Proposal for provisions concerning:

• B1 lane centering
• ACSF activation conditions
• Driver override
• Clarification of ACSF standby-mode
• Clarification of “ready-to-intervene"
• Indication to the driver in case of suppression
• Clarification of suppression criteria
• Sensor test before activation.

47. The expert from OICA presented GRVA-05-52, introducing GRVA-05-30 with amendments to the provisions applicable to ACSF of Category C.

48. The expert from CITA introduced GRVA-05-50 with amendment proposals to Annex 8.

49. The expert from Germany introduced GRVA-05-53 with amendment proposals to para. 5.6.4.7. (critical situation).

50. GRVA requested the secretariat to distribute GRVA-05-30, GRVA-05-50 and GRVA-05-53 with official symbols at its September 2020 session.

Proposal to stipulate that “Automatic deactivation by the system of the direction indicator is required only if the lane change manoeuvre is initiated automatically, or if the direction indicator control is not fully engaged (latched position) during the lane change manoeuvre.”

45. The expert from AVERE introduced ECE/TRANS/WP.29/GRVA/2020/9 as amended by GRVA-05-09. The proposal received comments (GRVA-05-58). The expert from the Netherlands expressed concerns with the proposal as the proposed amendment did not improve safety. GRVA adopted the proposal as reproduced in Annex IV of the session report (based on GRVA-05-09-Rev.3) and requested the secretariat to submit it to WP.29 and AC.1 as a supplement to the 03 series of amendments to UN Regulation No. 79 for consideration and vote at their June 2020 sessions.

Proposal to introduce provisions for

• the approval of Remote Control Manoeuvring (RCM) systems
• a “two-step Human Machine Interface” in the requirements for Automatically Commanded Steering Functions (ACSF) of Category C lane-change functions, and
• to resolve measurement concerns in the test requirements for ACSF of Category B1 and C by introducing provisions for tolerances, including:
  • 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,
  • sampling rate of at least 100 Hz for dynamic testing,
  • specification of filters and cut-off frequency for determination of lateral acceleration,
  • option to measure “overriding force” torque via an internal sensor or an external device (e.g., steering robot).