WP3 - Behavioural aspects

The objective of WP 3 is to develop and evaluate an assessment methodology to quantify effects or qualify the interaction of the driver/driver behavioural aspects on the performance of Integrated Safety Systems- suitable for system optimisation, regulatory testing and consumer assessment. During the first Task (3.1) based an extensive review of previous European projects, general principles for “experimental design” has been developed and summarized in a story book. It describes the test set-up and the test scenarios as well as the required output parameters and the data processing that is required to make an assessment of the system regarding human behavior.

                                   
IDIADA propulsion system                            Toyota driving simulator                          Daimler driving simulator

Within the completed second Task (3.2), further works on the details of the experiments design has been performed.
The Task focuses on the implementation of the story book with respect to different kind of test environments (test track and driving simulator).
Experiments with subjects were conducted at the IDIADA proving ground and at the moving based driving simulators of Toyota and Daimler analyzed.
The test design includes: test scenarios, measurements, key performance indicators and questionnaires.

test scenario “braking lead vehicle

The following aspects were investigated and have been taken as a first approach towards assessment criteria:
• Driver reaction for intended system performance (especially for semi autonomous systems)
• Validation of driver behaviour regarding inadequate system reaction or possible side effects due to a FALSE trigger of the system.

The effect of forward collision warning systems on driver behavior could be evaluated through the gathering and analysis of subjective and objective data. In addition findings will be delivered to other WP’s within the ASSESS project. Driver reaction times for example are needed as input to WP4 (pre crash evaluation).
On the other hand also issues for further improvements (e.g. expectation effects) were found

Results “expectation effects on reaction times)

The results of the different experiments will lead to an advanced experimental design as a basis for the final objective of WP3 which will be developed within the third Task (3.3) “draft protocol for the assessment of behavioural aspects”.