The moving weighing system is one of the most efficient methods to control the weight of vehicles passing through a section. ongoing weighing system is a useful and efficient technology to control overloaded vehicles and prevent road pavement damage. In this research, the optimization model of overload reduction in vehicles by using ongoing weighing system, Analytical Hierarchy process has been used. The aim of the Hierarchical Analysis Process technique is to select the best option based on different criteria through pairwise comparison. This technique is also used to weight the criteria. The parameters are clear and the importance of their weighting is as follows: among the main criteria, the volume of heavy vehicles with a weight of 0.220 ranks first, the traffic volume of AADT with a weight of 0.194 ranks second, the length of the route with a weight of 0.168 ranks third, the average axis speed with a weight of 0.123 ranks fourth, violations With a weight of 0.111, it ranks fifth, the average number of crossing lanes with a weight of 0.110 ranks sixth, and the average number of truck loads with a weight of 0.061 ranks seventh. The final weight of the options is obtained by multiplying the relative weight of the options by the weight of the main criteria. Arak-Salfachegan axis has won the first rank with a weight of 0.438, Arak-Broujerd axis has won the second rank with a weight of 0.313, and Arak-Kanar Gozur North axis has won the third rank with a weight of 0.093.