Crash Risk Prediction Model of Lane-Change Behavior on Approaching Intersections

Table 4

The correspondence between risk level and conflict risk index.

Risk level	Conflict Risk Indices		P
	TTC (s)	DRAC (m/s^2)
0	≤0	0	0	1	0
	>4.0	0 to 1
1	2.5 to 4.0	1 to 2	0.2	0.8	0.25
2	1.5 to 2.5	2 to 4	0.3	0.7	0.43
3	1.0 to 1.5	4 to 6	0.6	0.4	1.5
4	≤1.0	≥6	0.8	0.2	4.0