Safety Evaluation Method and Standard of Highway Alignment Design

Combined with typical highway in-situ observation test data of statistical results and comparative analysis on the field data and theoretical data,through validation and suitability analysis of the practical engineering projects,aimed at design of expressway and the first class highway,authors pointed out the exact safety evaluation index and reference index for design inspection and safety evaluation,formed the overall process and method,also put forward highway safety evaluation index and the corresponding safety evaluation standard based on Chinese highway traffic characteristics,driving behavior characteristics and road environment. Results show that the system is verified with many practical highway projects.The evaluation system guides the detailed concept of safety inspection and evaluation based on operating speed.It is already mentioned in Chinese road design standards,and it supplements and improves the current highway design theory and method.