Influences of Exit Advance Guide Signs on the Trajectory and Speed of Passenger Cars in Highway Tunnels

Table 4

Average speed and acceleration at different sections within 200 m after the tunnel exit.

Service level	Working condition	V1 (km/h)	V2 (km/h)	(m·s^−2)	ΔV1 (km/h)	ΔV2 (km/h)
First level	1	69.86	61.53	0.11	10.14	18.47
	2	69.03	59.24	0.10	10.97	20.75
	3	71.83	63.75	0.13	8.16	16.26
	4	69.78	62.20	0.10	10.21	17.80
	5	73.42	64.44	0.19	6.58	15.56
	6	72.94	63.38	0.12	7.06	16.62
Second level	1	69.89	61.28	0.11	10.11	18.72
	2	66.55	59.63	0.07	13.45	20.37
	3	70.50	63.30	0.09	9.50	16.70
	4	69.71	61.79	0.08	10.29	18.21
	5	73.41	63.16	0.12	6.59	16.84
	6	71.38	62.81	0.10	8.62	17.19
Third level	1	67.09	59.95	0.08	12.90	20.05
	2	64.79	57.98	0.07	15.21	22.02
	3	66.87	60.42	0.06	13.13	19.58
	4	65.61	58.92	0.07	14.38	21.08
	5	68.78	62.52	0.06	11.22	17.48
	6	66.34	61.49	0.02	13.66	18.51