  Context: Since 2014 several modern cars were rated regarding the performances
of their active safety systems at the European New Car Assessment Programme
(EuroNCAP). Nowadays, consumer tests play a significant role for the OEM's
series development with worldwide perspective, because a top rating is needed
to underline the worthiness of active safety features from the customers' point
of view. Furthermore, EuroNCAP already published their roadmap 2020 in which
they outline further extensions in today's testing and rating procedures that
will aggravate the current requirements addressed to those systems. Especially
Autonomous Emergency Braking/Forward Collision Warning systems (AEB/FCW) are
going to face a broader field of application as pedestrian detection or two-way
traffic scenarios. Objective: This work focuses on the systematic generation of
test scenarios concentrating on specific parameters that can vary within
certain tolerance ranges like the lateral position of the vehicle-under-test
(VUT) and its test velocity for example. It is of high interest to examine the
effect of the tolerance ranges on the braking points in different test cases
representing different trajectories and velocities because they will influence
significantly a later scoring during the assessments and thus the safety
abilities of the regarding car. Method: We present a formal model using a graph
to represent the allowed variances based on the relevant points in time. Now,
varying velocities of the VUT will be added to the model while the vehicle is
approaching a target vehicle. The derived trajectories were used as test cases
for a simulation environment. Selecting interesting test cases and processing
them with the simulation environment, the influence on the system's performance
of different test parameters will be investigated.
