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).

Proposal to update and clarify Annex 6 on requirements for documentation, fault strategy and verification of the safety of electronic systems and complex electronic vehicle control systems related to vehicle steering. The assessment particularly addresses driver assistance and automated steering.

Proposal to introduce provisions for the approval of Remote Control Manoeuvring (RCM) systems.

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.

Discussion of lateral acceleration values for Automatically Commanded Steering Functions (ACSF) of Category B1 (e.g., SAE L2 lane-keeping) and proposal to allow the vehicle under test to change speeds in order to meet maximum lateral acceleration values when navigating curves.

Proposal to allow for higher lateral acceleration limits for Automatically Commanded Steering Functions (ACSF) in executing lane changes.

Proposal to supplement paragraph 5.6.4.6.7. with additional requirements regarding lane-change driver actions that should allow for a more intuitive user experience while limiting a significant risk of mode confusion.