Research on the Relationship between Dynamic Message Sign Control Strategies and Driving Safety in Freeway Work Zones

Table 4

Index pairwise comparison questionnaire for the AHP method in the strategy compliance evaluation.

NOTE: please fill in this questionnaire according to following judgment criterion table.
Score	Meaning
1	The two indices are equally important
3	The first one is slightly more important than the second one
5	The first one is obviously more important than the second one
7	The first one is strongly more important than the second one
9	The first one is extremely more important than the second one
2, 4, 6, 8	The mid-value between the above judgments
Compare the indices i and j to obtain judgment ; compare the indices j and i to reciprocal; Obtain judgment
When there is free traffic flow in work zones: (1) The location of lane change is compared to the entering speed ( ); (2) The location of lane change is compared to the mean of accelerator ( ); (3) The location of lane change is compared to the mean of lateral placement ( ); (4) The entering speed is compared to the mean of accelerator ( ); (5) The entering speed is compared to the mean of lateral placement ( ); (6) The mean of accelerator is compared to the mean of lateral placement ( ); When there is traffic jam in work zones: (1) The location of lane change is compared to the entering speed ( ); (2) The location of lane change is compared to the mean of accelerator ( ); (3) The location of lane change is compared to the mean of lateral placement ( ); (4) The entering speed is compared to the mean of accelerator ( ); (5) The entering speed is compared to the mean of lateral placement ( ); (6) The mean of accelerator is compared to the mean of lateral placement ( )