Patent ID: 11897498
Assignee: TOYOTA MOTOR EUROPE
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B  G

Claim 7:
8. An automated driving system for a host vehicle, the automated driving system comprising an electronic control unit configured
a) to acquire a speed Vx of the host vehicle, a relative speed Vr between a preceding vehicle and the host vehicle, and a relative distance Dr between the preceding vehicle and the host vehicle;
b) to calculate a perceived risk level as a function of said speed Vx of the host vehicle, said relative speed Vr, said relative distance Dr, and at least one of parameters Vx*Vr and Vx2;
c) to control at least one vehicle device of the host vehicle as a function of the perceived risk level;
wherein the control unit is configured to calculate the perceived risk level PRL based on equation (1):

PRL=(Dr−Pb*V)/(Pa*V); wherein  (1)

Pa, Pb are five components vectors; and
V=(1; Vx; Vr; Vx*Vr; Vx2).