Interactive Influence Analysis of Tunnel Lateral Clearance on Driving Behavior Using Expressway Field Data

Table 3

SW normal test result.

	Scheme number	Index	Statistics
Left	Scheme 1	Average speed	0.825	0.002
		15th percentile speed	0.866	0.010
		Operating speed	0.886	0.023
		Standard deviation	0.873	0.013
	Scheme 2	Average speed	0.895	0.033
		15th percentile speed	0.780	0.000
		Operating speed	0.978	0.909
		Standard deviation	0.840	0.004
Right	Scheme 1	Operating speed	0.948	0.335
		Standard deviation	0.942	0.315
	Scheme 2	Operating speed	0.932	0.169
		Standard deviation	0.911	0.066
	Scheme 3	Operating speed	0.949	0.359
		Standard deviation	0.922	0.110

indicates significant difference.