ADAS Collision Avoidance

While braking is often the best response to sudden danger, a collision avoidance maneuver may also be necessary where braking alone is not enough to prevent an accident. While braking maneuvers affect longitudinal control of the vehicle, collision avoidance maneuvers affect its lateral control. The issues associated with an automatic lateral control intervention are much more complex.

Should the driver feel the intervention on the steering wheel or should the steering wheel be bypassed during the intervention?
If the steering wheel is bypassed, how does the driver resume control after the intervention is over? After all, the position of the wheels no longer match that of the steering wheel, especially if the driver has turned the steering wheel during the intervention.
If the steering wheel is not bypassed, how much steering torque should be applied during the intervention so as not to endanger the driver and to give them a chance to override the system if the collision avoidance maneuver has been initiated in error?
Should the driver be able to override the system at any time or is there a “shock period” during which a driver would likely react erratically?

The projects Aktiv-IQF and UR:BAN (both funded by the Federal Ministry for Economic Affairs and Energy) have devoted several subprojects to these questions (urban-online.org).

Within the scope of these projects, several tests were conducted to examine the design of collision avoidance systems in terms of the different questions.