Procedure of the deduction score determination of each damage.
|1||Collect the number of damage units for each freeway segment (one kilometer long) and the scores evaluated subjectively by the experts.|
|2||Get the relationship of each safety facility between number of damage and the evaluating score by linear regression.|
|3||Calculate the slope of the equation from Step 2 of each kind of safety facilities, which is the deduction score of each damage unit.|
|4||Adjust the deduction scores according to the expert opinions and get the final results.|