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

Table 6

Descriptive statistics of speed indicators for different design speed schemes.

	Scenario scheme	Average speed	Speed standard deviation
Left lateral clearance	Scenario 1	61.2	3.7
	Scenario 2	76.8	5.2
	Scenario 3	119.2	8.7
Right lateral clearance	Scenario 2	83.1	4.8
	Scenario 3	117.7	6.7