Document Title: Results of NTSEL study on ACSF transition time
Document Reference Number: ACSF-04-15
Presentation of results from Japan’s NTSEL research into the time required for the driver to transition from automated to manual steering modes and on driver/vehicle behavior throughout the transition period under various traffic scenarios.
Main content of document from (J):
To study transition from ACSF to the driver using a driving simulator when the driver needs manual operation while using the ACSF on a highway. CPs have been part of the study
(OICA): Have the subtasks been switched off when the warning was issued?
(D): Presentation is very helpful for the discussion.
(SE): This was a very useful experience
(NL): The people in the study have been aware that something will happen. So the values seem to be the “minimum”
(D): situation in the test was very realistic, because the drivers where partly very drowsy (ed. because of jetlag…)
(SE): Why is (in slide 17) the response time of the driver without warning faster than with warning?
(J): Interpretation: The driver is more relaxed when he expects that the system will warn.
(OICA): at least it should be clear, that a is not possible, before a failure in the system occurs.
(Chair): it was not a failure, it was the misinterpretation of the system.
(Chair-J): the warning time is also the time, when the failure occurs and the system is still working.
(Chair): Summary of the discussion:
– 2s should be the minimum
– 4s are appropriate
(Chair-J): supports the 4s
(SE): maybe already 2s could be helpful as an “emergency system”