Road Alignment Safety Evaluation Method Research And Application

Chinese traffic situation is increasingly serious, the alignment level of design plays a deterministic part in the safety traffic, through the safety evaluate of alignment, we will find the insufficient of the alignment design, and reduce the potential safety hazard. Thus study the method of evaluation on the alignment is an important task.Firstly, the paper analyzes the relationship of horizontal alignment, Vertical alignment and linear traffic safety. Analysis of the four evaluation methods applied to linear safety assessment:speed consistency evaluation methods, design consistency evaluation method, the line of sight safety and the safety of the horizontal force coefficient evaluation methods and establish corresponding linear safety evaluation model. Secondly, the paper uses the theories and methods of comprehensive evaluation, analyze the road alignment safety evaluation method, select comprehensive evaluation method to determine the weights of the different linear corresponding to different single evaluation method, set a score for single evaluation and then establish a comprehensive security evaluation model. At last, At last, give an instance of the "Chao Ma Road" object to study, using a single evaluation index and comprehensive evaluation model (key) to analyzes the Chao Ma Road, from the case, we have verified the practicality of comprehensive evaluation model.