METHOD AND DEVICE FOR DETERMININGA DECELERATION SETPOINT VALUE OF AN AUTONOMOUS VEHICLE

The invention relates to a method and a device for determining a deceleration setpoint value of an autonomous vehicle (), the autonomous vehicle () comprising an adaptive cruise control capable of decelerating the autonomous vehicle according to a first deceleration setpoint (), referred to as standard deceleration, the autonomous vehicle () traveling along a first lane () at a first speed, the vehicle heading into a second lane () subject to a speed limit () at a distance, D, relative to the beginning () of the second lane (), said method comprising the steps wherein: —a necessary deceleration is calculated; —the deceleration setpoint of the autonomous vehicle () is determined; —the adaptive cruise control applies the deceleration setpoint thus determined in order to decelerate the autonomous vehicle () from the beginning () of the second lane ().