Safety Assessment and a Parametric Study of Forward Collision-Avoidance Assist Based on Real-World Crash Simulations

Table 4

Input parameters and their distribution.

Input variable	Variable name	[Range] unit	Distribution
Subject vehicle’s speed		[0–200] kmph	Gamma distribution (shape = 5.78854313, rate = 0.070391)
Leading vehicle’s speed		[0–50] kmph	Uniform
Initial distance		[30–120] m	Uniform
Safety margin		[6,9,12,15] m	Uniform
Road friction	Mu	[0.3–0.9]	Normal (mean = 0.65, sd = 0.1)
Braking intensity deceleration	Br_L	[3–9] m/s^2	Uniform
Maximum brake intensity	Br_F	[3–9] m/s^2	Normal (mean = 6.4, sd = 1)
Driver’s reaction time		[0.26–2.5] s	Gamma distribution (shape = 7, rate = 7)
Driver brake	Br_inp	[1: yes; 0: no]	In 70% cases, “yes,” and in 30% cases, “no”
Type of FCW/AEB algorithm	ADAS	AL_K, AL_P, AL_TTC, No_AEB	N/a