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CLEPA proposal on the Automatically Commanded Steering Function amendment to UN Regulation No. 79
Document LKAS-02-03
24 November 2014
Submitted by CLEPA
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Previous Documents, Discussions, and Outcomes
2. | LKAS
3. (b) | Explanation of GRRF-78-14

The group went through LKAS-02-03 document.

Paragraph 5.1.6.2.4. (b):
- The group convened that the transient from auto mode to manual mode is a key to the system safety. As there is a need for a certain time, J found the 2 seconds a minimum. There is a need also to find a consensus wording avoiding different interpretations. Yet the different situations should be taken into account, and there is no guarantee that the system can predict the future such in advance.
- There was a debate about the origin of the 2-second value, in comparison of the limits adopted at AEBS. Some experts indeed feared that the 2-seconds requirement is too demanding.
- Other case: degraded mode
- Sub-paragraph (b) in J approach was clarified: it addresses both fault and non-fault conditions; while (b) in CLEPA approach only addresses non-fault conditions (fault conditions are addressed in sub-paragraph (c) ).

Paragraph 5.1.6.2.4. (c):
- Agreed that the CLEPA proposal addresses the fault conditions

Paragraph 5.5.2.
- OICA informed having very much challenges with regard to PTI and OBD, and suggested that this PTI item is extracted from AEBS up-to-date regulation.
- J was keen to explain a proposal for OBD.
- NL supported a text aligned on that of AEBS, having no connector, rather a simple warning lamp. The delegate insisted that PTI should remain a quick and simple check.
- CLEPA challenged as well the Japanese approach: no standardized connector, data, protocols, etc.
- The European Commission informed about high probability that the EU requires an OBD-X (safety related OBD)

Relates to LKAS | UN R79 |