Design Of Mountain Highway Emergency Lane

In recent years, with the continuous development of traffic cause in our country, highway transportation demand increasing, the total road mileage in increasing. Its development in bring convenience to people at the same time, also brought the serious situation of traffic accident occur repeatedly. Especially in the mountainous area highway continuous downhill, vehicle especially because of brake failure caused by the accident.Purpose of this article is based on vehicle(especially the overspeed overload of large and medium-sized passenger cars, trucks) grew up in continuous downhill road section and the driving characteristic of hedge lane as the background, through the analysis of all levels of road accident investigation, the condition of overload vehicle and the driver driving behavior on the influence degree of the accident. Brake drum temperature model is established, then study the effect of heat recession on traffic safety brake system, it is concluded that the temperature of the brake drum and the relationship between the vehicle speed and vehicle its own gravity. Then the specific design of hedge lanes, grew up through the continuous downhill accident investigation, determine the importance of setting safety lane. And its composition, types, location selection, entrance Angle, such as graphic design, profile design for the system, and finally puts forward the concept of secondary hedge lanes, through example analysis of the necessity of secondary hedge lanes set, and the length and the slope has made the detailed design and calculation.