Overtaking Safety Evaluation and Setting of Auxiliary Lane on Two-Lane Highway in China

Table 2

Surveying results by Delphi method.

Expert’s number	⁢Membership thresholds between minor; and general conflicts			⁢Membership thresholds between general; and serious conflicts
	Minimum value	Suitable value	Maximum value	Minimum value	Suitable value	Maximum value
1	0.2	0.3	0.4	0.5	0.7	0.8
2	0.1	0.3	0.5	0.3	0.6	0.8
3	0.4	0.5	0.6	0.6	0.7	0.8
4	0.45	0.5	0.55	0.85	0.9	0.95
5	0.3	0.4	0.5	0.7	0.75	0.8
6	0.1	0.25	0.5	0.5	0.75	0.9
7	0.2	0.3	0.4	0.5	0.8	0.9
8	0.2	0.3	0.4	0.7	0.8	0.9
Average value	0.24	0.36	0.48	0.58	0.75	0.86