Study On Continuous Longitudinal Gradient Capacity And Driving Safety Evaluation Of Mountainous Highway

With the rapid development of Chinese economy, China’s highway entered a stage of vigorous development. Highway is the carrier vehicle, highway will directly affect the quality of the linear vehicle safety, especially in the western mountains. Because of the terrain, complex geological conditions, environmental conditions, special circuit design more difficult, often grow continuous longitudinal. Due to continuous longitudinal grew up truck has a greater impact on the safety of road travel, so this paper, load the car speed downhill slope and brake drum temperature change as the basis to evaluate the safety of continuous longitudinal grow and do not meet the safety requirements of sections is recommended to set a variety of security measures.This paper summarizes the stage presence of highway safety issues at home and abroad about growing up and operating speed continuous longitudinal research and application, in order to determine the speed of the truck to run uphill to evaluate grew continuous traffic safety, also in accordance with research results in order to determine the truck brake drum temperature to evaluate the safety of continuous downhill grow. For grown continuously uphill, in determining the initial slope when the vehicle speed load after applying the knowledge of vehicle dynamics to establish the total weight of the load of different sections of the process of moving the car slope running speed prediction model to determine so that the truck run slower than allowable speed sections. For grown continuously downhill, in determining the initial speed of the truck downhill, combined research results, the establishment of the establishment of a different total weight of the truck in the downhill run to maintain different speeds during brake drum temperature prediction model to determine the truck brake drum temperature can lead to dangerous driving excessive road.In this paper, "Safety Evaluation Guide highway project" approach and principles on the operating speed of coordination, combined with relevant research results at home and abroad, grew up on how to protect the mountain highway safety continuous longitudinal conducted in-depth research and analysis. Subsequently, through the analysis of existing data to establish the simulation summary prediction software, grew up on the highway Huashixia TaWu predict continuous longitudinal analysis, set a variety of protective measures for the safety of poor roads and improve management, to improve the safety of continuous longitudinal grow and achieve the purpose of protection of traffic safety.