Mountainous Highway Routing Decision-Making Model Based on Variable Weight Grey Theory

Topographic, geologic and environmental condition is complex in mountainous area. Many factors impacting mountainous highway routing decision-making. The factor’s weight is variable and influence with each other. Variable analysis method is used to determine the weight of decision-making factors. The research use Grey Theory to build model with the factors to compare with alternative plans and calculate the optimistic one. Finally we bring out the Decision-making model of mountainous highway routing base on variable weight. The model can provide a new method for highway routing decision-making.