Table 2

Scoring of driving performance metrics in potential crash scenario type

Potential crash scenario type	Variations	Number in SDA	Driving performance metric
Potential crash scenario type	Variations	Number in SDA	Lane choice	Lateral acceleration during a turn	Speed	Stopping behaviour at a stop sign	Traffic check	Turn signal	Yaw	Braking behaviour in a hazardous situation	Excess glance duration	Gap selection	Headway time	Scan-left for intersection	Scan-right for intersection	Scan-right hidden hazard
Controlled left turns	Three-way intersection with cross-traffic, no obstruction	2	X	X	X	X	X	X	X			X		X	X
	Three-way intersection with cross-traffic, with an obstruction	2	X	X	X	X	X	X	X			X		X	X
	Four-way intersection with cross-traffic, no obstruction	2	X	X	X	X	X	X	X			X		X	X
	Out of a parking lot	2		X	X		X	X	X			X
Curves	Curves in rainy weather	3			X
Rear-end—no distraction	Lead vehicle stops suddenly in the left lane in order to turn left	2			X					X			X
Rear-end—no distraction	Lead truck in right lane stops suddenly	3			X					X			X
Rear-end—with distraction	Lead truck in right lane stops suddenly while participant looks for loose change or tunes the radio	2			X					X	X*		X
Hidden hazard (car in driveway)	Car emerges from the right from an obstructed driveway in rainy weather	2			X					X						X
Uncontrolled left turns	Three-way intersection where participant has a green light	2	X	X	X			X	X					X	X