General project formulation flow of urban toll roads is as follows. Until the project is designated as an urban plan and Hanshin Expressway is appointed as the project implementation entity, the due process is basically governed by the national and the relevant local governments. Hanshin Expressway assists the process by providing analysis, data and information upon request, followed by further examinations to build a concrete project plan.

1. Hanshin Expressway Network Traffic Simulation

Output image of simulation

Based on the micro traffic simulation model specified for the Hanshin Expressway network and estimated traffic demand data sets in the national level, more local traffic flow simulation is conducted to examine change after the route addition. This methodology is also used for predicting the extent of effects of countermeasures on congestion-prone sections.

2. Detailed Project Planning

By considering the cases with different, reimbursement of total project and operation cost by the total toll revenue is simulated. A reasonable combination of toll and cost is selected and refined into a concrete project plan along with the coordination for a necessary cost allocation scheme between Hanshin Expressway and other governing entities. After the plan is finalized and approved by the relevant entities, the process enters the steps of agreement with the Japan Expressway Holding and Debt Repayment Agency and acquisition of project license from the national government.

3. Project Budget Planning

After the coordination with the relevant organization and the setting of precise project schedule, annual budget spending plan for the construction and land acquisition is finalized. Also necessary approvals are to be obtained for the work commencement.

4. Other Responsibilities

Budget Management and Project Assessment

We are also in charge of the management of annual operation and maintenance budget. Other responsibilities are the cost-benefit analysis of the project after the completion and the intermediate analysis during the construction when the conditions vary and the needs of reevaluation arise.

Action Program against Congestion

With points and causes of chronic congestion are identified, feasible countermeasures (e.g. realignment, lane addition, traffic flow smoothing at merging and diversion points) are examined and reflected in the concrete action programs. These programs include the results of effect simulation and the budget estimation for the implementation after the approval. Due to lane addition shown on the following, congestion has decreased since the completion in 1997.

A case of lane addition on the worst congestion point in Osaka