A kind of factor analysis method to road safety evaluate

To improve precision in road traffic safety macroscopic evaluation,the relativity among the chosen evaluation indexes should be avoid;and to avoid the subjectivity,the impersonal weight as the importance of different indexes should be done.The paper discussed that it regarded common factor in factor analysis method as replaced indexes and the scored value as the new indexes' values.So the new index weights were calculated according to the explained extent of original evaluation data.Then objective evaluation was done with linear weight method to what we would evaluate.At last,we made a contrast with other methods and studied the application,and discovered different conclusions compared with other methods.