Fig. 4From: A driver’s car-following behavior prediction model based on multi-sensors dataMean TTC in accelerating or non-accelerating state. The relationship between the TTC parameter and whether the driver slowed down or not was analyzed, and the TTC averages in different states are depicted. The TTC mean value of adopting braking is 3.3 s, whereas that without slowing down is 20.3 sBack to article page