Design Evaluation Based on National Highway 339 Xiyang County Transit Section Transformation
To solve the traffic congestion and environmental problems in the transit section of National Highway 339(formerly S317)in Xiyang County,the principles and key points of highway route design have been proposed with a new design concept.Through innova-tive design concepts,including comprehensive safety protection,ecological environment coordination and symbiosis,optimized utilization of land resources,and regional coordinated development strategies,the aim is to improve the level of highway services and regional e-conomy.Adopting the four stage method for traffic flow prediction and applying the multi-path probability allocation method for traffic volume allocation.The design scheme considers the fine design of horizontal alignment,vertical curves,combination of horizontal and vertical routes,and emergency escape lanes to achieve road safety,comfort,and environmental protection.Through capacity assessment,the rationality of the design has been verified,ensuring that the highway route can meet the traffic demand,achieve a relatively free flow state,and ensure good traffic operation quality.The service level of the designed highway route meets the Technical Standards for High-way Engineering and can effectively improve the road network structure and transportation environment of Xiyang County.
NETL
NSTL
万方数据
维普
