The Research On Truck Escape Ramp And Safety Establishment Practice Technology On Expressway

In China, recently, although a large amount of manpower and material resources have been invested to improve road safety of our country, the frequency of traffic accident and its economic losses let our our known that the highway safety level still has a large space of ascension. It's still a hot issues that people pay attention to our level of road safety of how to save a life and to reduce the losses as possible. Generally speaking, the highway design criteria rating is inversely proportional to traffic accidents. Since 1988, China's first highway was running, traffic accidents and the death toll continues to rise In 2007 the death toll of traffic accidents on highway was up to 5925,1105 people died every ten thousand kilometers on average, which is far higher than the level of common road. This is quite different with characteristics of western countries, it was said that number of fatal accidents of foreign highway is only 1/3～1/2 of that of other road.As an important connecting in northwest, Gansu province occupies an important position in road traffic network of our country. So far, national road and provincial road account for one fourth of the total,the situation of traffic accident on highway is serious. The main difficulties and problems is setting unreasonable on traffic safety facilities such as truck escape ramp, road signs and road traffic marking. For the existing problems of road safety facilities in gansu province based on analysis of the traffic accident investigation, this paper studied the design method of the parameters such as the position selection,, slope Angle, the length of the hedge lanes. For the existing problems of traffic sign settings, based on in the running speed, it puts forward the method of traffic signs settings and puts forward reasonable suggestions of severals design method of traffic signs, At the same time, for the problem of frequency traffic accident of highway tunnel, the long downhill, village populated in gansu province, it puts forward the method to reduce the speed by visual line. Hoping to improve road safety facilities design and application status, provide better security for vehicle and along the masses.