The development of traffic management strategies starts with a traffic problem situation, defined by the traffic status or events within the traffic network. A concept of action is generated that consists of different single measures to minimize or eliminate the traffic congestions. This concept of action with the various situation-related measures is called a strategy. Within the regional traffic management the problem situations whose effects cannot be mastered by only one traffic management partner are of special interest. In this case, the corresponding cross-border and intermodal strategies consist of measures from various partners, which need to be coordinated. Improved co-operation and communication between the decentralized organized departments within corresponding region is one goal of the regional traffic management. This is needed to reduce the effects of regionally significant traffic hold-ups or to prevent congestion within a traffic network entirely. The individual technical and organizational constraints of all partners must thereby be taken into consideration. This is where the development of ISM sets in. It enables the management of cross-border and intermodal strategies and the communication between the parties concerned within the traffic management. The Intermodal Strategy Manager ISM, a development within the framework of the Hessian WAYflow-project following the goal to improve traffic management in the Rhine-Main area, supports the planning of new strategies, starting with their impact assessment and coordination up to their implementation as well as the optimising of existing strategies. The advantages of the ISM as a part of the regional traffic management are obvious: (1) it is unnecessary to build up an overall traffic control center and to hand over responsibility from the partners. Every partner is still responsible for his area and keeps the ability to influence the his own measures; (2) the ISM development is system independent and allows every partner to decide how and when to conceive their own automatic Strategy Manager; (3) the internet based communication is technically easy to implement and requires very little technical or financial effort from the partners; and (4) the amount of data exchanged is small as no bulk data needs to be transferred.
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