A benefit-cost analysis method to determine the rate of overloaded vehicle enforcement (Case Study: Esfahan – Naein)

Weigh In Motion system (WIM) is known as an important component of ITS, its usage is increasingly to be applied for axle load enforcement. Huge investment in construction and maintenance of pavement leads policy makers to tackle overloading using weigh in motion systems. Installing weight in motion system is a high investing constructive project in terms of needed special pavement, electronic devices, and data transferring device and human resource to overloading reduction and save pavement condition in proper situation. Following the above mentioned, it is necessary to be a trade-off consideration between pavement cost repairing and installing weigh in motion system. So in this research will be presented on the basis of break-even at the cost of purchase, installation, operating and maintenance costs of the system and saves the cost to repair the pavement as the top model in terms of income. The average overloaded axles under enforcement performed by authorities to tackle overloading is studied a criterion and the proposed model determines the minimum average overloaded axes in which installing WIM would be an economic project. Although, the proposed model is designed as a parametric pattern, but an installed WIM system has been selected as case study and the number of required enforcement calculated. Results of this study will help decision-makers in the field of transport, as in the operation of WIM to achieve a balance between costs and revenues from it the right decision to take.