Quantification of Rear-End Crash Risk and Analysis of Its Influencing Factors Based on a New Surrogate Safety Measure

Table 4

The vehicle movement data and risk identification results for one car-following event.

Time interval (0.1 s)	FV speed (m/s)	|FV speed − LV speed| (m/s)	Headway distance (m)	Risk (TTC)	Risk (DRAC)	Risk (SDI)	Risk (RCRI)
…	…	…	…	…	…	…	…
158	16.9	9.4	38.7	0	0	1	0.08
159	16.7	9.7	37.9	0	0	1	0.10
160	16.4	10.2	36.5	0	0	1	0.16
161	16.1	10.4	35.7	0	0	1	0.18
162	15.9	10.5	34.9	0	0	1	0.21
163	15.6	10.7	33.3	0	1	1	0.27
164	15.2	10.7	32.5	0	1	1	0.30
165	14.9	10.8	31.7	1	1	1	0.31
166	14.6	11.2	30.0	1	1	1	0.43
…	…	…	…	…	…	…	…