Analysis On The Highway Alignment Factors For Affecting Traffic Safety

Recently, with the rapid rise of the gross economy, the transportation business has been quickly developed. To be a part of the transportation business, the highway transporting business has also been developed better and sooner. The highway mileages of the whole country have been stepped up. The highway construction is in a good station, at the same time, the importance of the highway safety must be emphasized. The number of the gross traffic accidents is shocking. So how to enhance the highway traffic safety level and decrease the accident rates needs to be solved quickly. The highway traffic system includes "people, vehicle, highway and environment", in the four factors of which, the highway factor should not be ignored. Especially, the affect of the highway alignment for the highway traffic safety is very important. The safety level of the highway alignment directly determines the whole highway traffic safety level. The paper started from the highway alignment analysis, establishes a set of evaluation index system through the analysis of the planar, transect, vertical alignments as well as the stadium and the alignments combination, and evaluates the highway alignment safety level with the fuzzy comprehensive evaluation method. This evaluation method can be used not only in comparing the alignment scheme, but also in evaluating the completed highway alignments, So that the problems can be founded, and be further soveled.