Abstract
Keywords: Accident Scenario, Anti-Collision-Systems, Assessment, EVITA, Test Persons
This paper presents a new concept for testing and assessing the potential of Advanced Driver Assistance Systems (ADAS), in particular collision avoidance and driver alert systems. The development of these systems has to consider on the one hand the expressiveness and transferability of the testing method, and on the other hand the security of the concerned objects and persons. A tool with a new testing method which fulfils these requirements has been developed at the Chair of Automotive Engineering in Darmstadt. This testing method was used in a research project with Honda R&D Europe and in a research project with AKTIV in the subproject "Aktive Gefahrenbremsung" (autonomous braking). The aim of the Darmstadt Test- and Evaluation-Method with EVITA (Experimental Vehicle for Unexpected Target Approach) is to carry out trials with test persons under real driving conditions. Investigations have shown that when following EVITA, an uninformed test person has the same driving style as in normal traffic. Thus, a maximum of transferability from the tests is warranted.
EVITA fulfils the following requirements:
o test speed: up to 130 km/h
o differential speed one second before a collision between EVITA and the following vehicle: up to 50 km/h
o deceleration: up to 9 m/s²
o rear view: original Mercedes A-class end
The process has been validated by more than 1500 trials without malfunction. By defining the assessment criteria, it was possible to clearly differentiate between various frontal collision avoidance systems. Examples of this are the findings from the three driver alert elements "tire squeal", "brake jerk" and "seat vibration and symbol". EVITA therefore provides an objective, driver-integrated assessment method for developing anti-collision systems.