Determination of the Amount of Toll for Entering to the Central Area of City Based on Social Costs (Case Study of Isfahan)

The concepts of social costs and equilibrium between supply and demand curves are used to providing a new method for determining the toll in cordon pricing policy. At this point receiving toll from private cars which enter in cordon is equal to marginal cost of the car. Demand chart obtained by using information from personal interviews with car drivers willing to pay based on stated preference approach. Supply also is calculated according to social costs of traffic also, by using the results of the cars demand matrix assignment to the transportation network. By calculating the intersection point of the demand and the supply curves (marginal cost), toll level for an entering to the central area of Isfahan at peak hours is determined. At this toll level, more than 70 percent of privet car users will refuse using the private car and use other mods to travel to the city center.