However, due to the limits of the mountainous area highway\'s terrain, topography, complex geological conditions, environmental protection , construction difficulties and other factors, designers have to use the larger slopes or the longer slope lengths to make the mountainous area highways continuous upgrade sections.

A Survey on the Traffic Safety of Long Slope Road Section in Mountainous Areas and Its Control Measures;

The operating speed predicting model of trucks on freeway s longitudinal slope section was established based on vehicle s dynamics theory and operation theory,shifting performance and braking performance.

The main factors that influence the traffic safety of long downgrade road are analyzed,the disadvantages of traffic safety assessment are introduced,and the traffic safety synthetic assessment method with multiple indexes is put forward.