Table 2 Descriptions of collected... | Emerald Publishing

Table 2

Descriptions of collected variables

Category	Variable	Explanation
Demography	Age	Driver’s age
	Driving experience	Driver’s driving experience
	Gender	Driver’s gender
Time interval	Δt	Small time interval (e.g.1 s)
Vehicle movements characteristics	${\bar{V}}_{t_{0} - Δt}^{SV}$	Average velocity of subject vehicle during Δt before subject vehicle braking
	${\bar{a}}_{t_{0} - Δt}^{LV}$	Average acceleration of lead vehicle during Δt before subject vehicle braking (negative values denote deceleration)
	${Min a}_{t_{0} - Δt}^{LV}$	Minimal acceleration of lead vehicle during Δt before subject vehicle braking
Vehicle interaction characteristics	${\bar{D}}_{t_{0} - Δt}$	Average distance between lead and subject vehicle during Δt before subject vehicle braking
	${\bar{TH}}_{t_{0} - Δt}$	Average time headway between lead and subject vehicle during Δt before subject vehicle braking
	${\bar{TTC}}_{t_{0} - Δt}$	Average time-to-collision (TTC) of subject vehicle during Δt before subject vehicle braking
Mental workload	W	Driver's subjective rating of workload during car-following based on NASA-TLX
Collision avoidance behavior	$Lg ({\bar{TTC}}_{t_{0} + Δt})$	Take the logarithm base 10 of average TTC between lead and subject vehicle during Δt after subject vehicle braking
	$Lg ({\bar{TH}}_{t_{0} + Δt})$	Take the logarithm base 10 of average time headway between lead and subject vehicle during Δt after subject vehicle braking
	$Min {\bar{TH}}_{t_{0} + Δt}$	Minimal time headway between lead and subject vehicle during Δt after subject vehicle braking
	RT	Driver’s braking reaction time from lead vehicle braking to subject vehicle braking
	Bmax	The maximal brake pedal force exerted by the driver after the lead vehicle braked
	Tmax	The time of reaching the maximal brake pedal force

Category	Variable	Explanation
Demography	Age	Driver’s age
	Driving experience	Driver’s driving experience
	Gender	Driver’s gender
Time interval	Δt	Small time interval (e.g.1 s)
Vehicle movements characteristics	${\bar{V}}_{t_{0} - Δt}^{SV}$	Average velocity of subject vehicle during Δt before subject vehicle braking
	${\bar{a}}_{t_{0} - Δt}^{LV}$	Average acceleration of lead vehicle during Δt before subject vehicle braking (negative values denote deceleration)
	${Min a}_{t_{0} - Δt}^{LV}$	Minimal acceleration of lead vehicle during Δt before subject vehicle braking
Vehicle interaction characteristics	${\bar{D}}_{t_{0} - Δt}$	Average distance between lead and subject vehicle during Δt before subject vehicle braking
	${\bar{TH}}_{t_{0} - Δt}$	Average time headway between lead and subject vehicle during Δt before subject vehicle braking
	${\bar{TTC}}_{t_{0} - Δt}$	Average time-to-collision (TTC) of subject vehicle during Δt before subject vehicle braking
Mental workload	W	Driver's subjective rating of workload during car-following based on NASA-TLX
Collision avoidance behavior	$Lg ({\bar{TTC}}_{t_{0} + Δt})$	Take the logarithm base 10 of average TTC between lead and subject vehicle during Δt after subject vehicle braking
	$Lg ({\bar{TH}}_{t_{0} + Δt})$	Take the logarithm base 10 of average time headway between lead and subject vehicle during Δt after subject vehicle braking
	$Min {\bar{TH}}_{t_{0} + Δt}$	Minimal time headway between lead and subject vehicle during Δt after subject vehicle braking
	RT	Driver’s braking reaction time from lead vehicle braking to subject vehicle braking
	Bmax	The maximal brake pedal force exerted by the driver after the lead vehicle braked
	Tmax	The time of reaching the maximal brake pedal force