Safety Effects of Connected and Automated Vehicle-Based Variable Speed Limit Control near Freeway Bottlenecks considering Driver’s Heterogeneity

Table 2

Safety improvement rates (medium vs. short).

		NCuplimit (%)						OCuplimit (%)
		0	10	20	30	40	50	0	10	20	30	40	50
TET
MPR of CAV	10%	4.73	8.12	7.74	7.72	7.84	6.95	4.73	4.38	3.08	3.18	1.72	2.34
	20%	0.66	11.25	12.03	10.80	10.53	10.49	7.66	9.66	6.09	4.62	3.66	3.27
	30%	0.03	10.86	11.55	11.48	10.71	10.12	10.03	10.39	6.67	4.57	3.75	4.25
	40%	11.91	10.02	8.79	7.98	7.52	7.46	11.91	10.66	6.20	3.45	2.50	3.07
	50%	12.52	8.20	6.83	6.05	5.16	4.95	12.52	10.45	5.19	2.22	1.49	1.70
	60%	1.30	6.73	4.45	3.85	3.43	2.81	11.30	9.31	3.79	0.37	0.84	0.45
	70%	8.88	4.22	2.86	2.78	1.14	1.91	8.88	7.02	2.98	0.87	0.78	0.56
	80%	9.73	7.22	7.74	6.38	2.46	1.81	9.73	7.87	2.20	0.33	0.60	1.87
	90%	56.80	18.38	34.36	21.59	25.05	35.01	56.80	34.72	26.21	27.49	17.71	7.83
TIT
MPR of CAV	10%	2.42	4.40	4.50	4.44	5.00	4.45	2.42	1.65	1.07	1.39	0.65	1.13
	20%	5.66	7.17	7.59	6.83	6.90	6.78	5.66	5.72	3.16	2.29	1.78	1.94
	30%	8.36	7.96	8.04	7.91	7.30	6.85	8.36	7.13	3.84	2.29	1.73	2.28
	40%	10.10	7.84	6.54	5.76	5.41	5.27	10.10	8.14	4.01	1.67	0.74	1.37
	50%	10.22	6.27	5.06	4.36	3.55	3.26	10.22	7.95	3.59	1.05	0.28	0.54
	60%	8.68	4.96	3.04	2.61	2.32	1.81	8.68	6.81	2.50	0.05	1.14	0.06
	70%	6.35	2.91	1.96	2.05	0.54	1.36	6.35	4.52	1.92	0.64	0.78	0.20
	80%	7.93	6.59	7.34	6.05	2.16	1.67	7.93	5.94	1.36	0.15	0.52	1.49
	90%	6.66	18.17	34.48	21.75	25.14	35.20	56.66	34.27	26.04	27.48	17.81	7.67