Fujian Mountain Area Secondary Highway Research Expectation Speed

In recent years,with the rapid development of economy and per capita living standards gradually improve,road traffic accident has become a high attention of the country’s severe social problems.Especially mountain area highway,complex terrain,although less relative abundance of mountainous highway traffic accident,but the sharp mountain road,cliff in the dangerous sections of the comparison is more,so the shift caused by bad accident is very high.In the field of the research on road traffic safety,road traffic safety pre evaluation is an important branch of it.Speed prediction is road traffic safety pre-assessment of one of the most core content,but forecast vehicle running speed,you must first determine the expectations of a section of speed,based on this,this article study expect speed of Fujian mountain area secondary roads,to improve the level of Fujian mountain area secondary road traffic safety.First of all,in this paper,the desired speed characteristics of research are analyzed.Introduce the basic concept of expected speed,from the expected speed line into mechanism are analyzed,and analyzes the influence factors of expectation speed,and the application of expectations in traffic safety analysis speed.Secondly,based on the domestic and foreign research status on the research of the expected speed,research factors and experiment scheme is determined,the Fujian mountain area secondary road section bend dangerous roadside environments and different protection forms under the condition of expected speed and the relationship between the speed and the questionnaire survey.Based on the questionnaire survey,the sections under different cross-section velocity,different roadside environment,different protection forms,different models and different radius etc.Data collection and analysis.Finally,the control variable method is used to study the characteristics of expectation speed under the influence of different factors change.On the basis of the analysis of mathematical statistics,using two kinds of intuitionistic analysis and variance analysis method,the different factors influence expectations to bend under the condition of the vehicle speed change law and under the condition of different factors on the degree of the effect of the expected speed,at the same time,based on the analysis of the data model was established in by the water over the cliff road size under the condition of different protection expected speed and curve radius of the relational model.