The Setting Of Speed-limit Signs For Mountainous Expressways Based On Driver's Expectation

The rapid development of mountainous expressway, which greatly improved the road network in China's overall technological level, to optimize the transport structure, and to alleviate traffic "bottlenecks" to play an important role in effectively promoting China's economic development and social progress, However, the ensuing problem of road traffic safety has become a serious social problem. Complex topography of mountainous expressway, a lower linear indicators, and the bridge, a larger proportion of the tunnel, thus changing the operating speed, the greater the impact of traffic safety. In addition, due to the difference between mountain climatic conditions, leading to discontinuous operation of vehicles, lack of drivers to judge easily lead to driving out of control. Study found that speeding vehicles are road traffic accidents, one of the important incentives, speeding caused by road traffic accidents, accidents, not only in a considerable proportion of the total, and most major incident. Therefore it is necessary in accordance with the characteristics of mountainous expressway, reasonable control of speed, set speed limit signs, traffic safety protection.But how is a mountainous expressway in particular, the characteristics of the expressway, choose a reasonable value of the speed limit, speed limit signs set up a reasonable, balanced transport efficiency and safety, so that to maximize the overall efficiency, become the focus of attention, and before the traffic engineering staff of the problem before. In this paper, the development of the expressway from the status quo, the status of road safety and speed of China's expressway standards of the development of these three areas to describe the context of the need for research, a brief paper discusses the purpose and significance of the study, a detailed overview of domestic and foreign research in this regard the status quo, in this based on the research framework of this article and methods. The importance of speed limits based on a detailed analysis of the expressway speed limit of commonly used methods of approach and speed requirements of the characteristics and settings.Secondly, the paper transport from the driver the physical, psychological characteristics start with a comprehensive analysis of the drivers in the road in the process of physical, psychological and characteristics of the law, the application of modern theories of cognitive psychology, human-machine ergonomics theory, the driver of the signs of information processing, the establishment of the pilot structure of the traffic information processing model of the role and characteristics of the simple analysis. And based on the expectations and needs of the driver, the driver collected SP Investigation mountainous expressway speed limit signs on the attitude of settings, needs and response analysis to investigate the driver's preferences for the degree of speed signs, and drivers of small passenger cars for cross-representation and statistical analysis of the drivers on mountainous expressway speed limits and speed limit signs set the value of the expectations and preferences for domestic mountain setting expressway speed limit signs to provide a useful reference.Finally, the paper presents a mountainous expressway speed limit signs set the principles and ideas, and the characteristics of mountainous expressway in order to speed the Western Han Dynasty for example, by analyzing the value drivers of the speed limit on the expectations and set the desired speed limit signs Logit regression model, the driver based on reasonable expectations of the mountainous expressway speed limit, including the determination of limit values, set the speed limit signs and three support facilities.