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

Table 6

Average speeds within 100 m before and after the lane change position.

Service level	Group	Before 100 m (km/h)	Before 50 m (km/h)	At the lane line crossing position (km/h)	After 50 m (km/h)	After 100 m (km/h)	Average speed (km/h)
First level	Comparison group	67.77	65.30	63.25	61.25	59.24	63.36
	Test group	67.05	64.51	62.03	60.07	58.59	62.45
Second level	Comparison group	67.46	64.76	62.37	60.42	59.13	62.83
	Test group	65.67	63.38	61.01	59.09	57.49	61.32
Third level	Comparison group	62.12	59.88	57.94	56.36	55.29	58.32
	Test group	61.35	59.33	57.45	56.01	55.20	57.87