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We all know that networks are fundamental prerequisites for prosperity and production. Transportation and communication are indispensible to society, they are the elements which bind all economic systems together. Without networks and communica tion all social and economic life will be reduced to isolated phenomena. Therefore, transportation can't be assessed in the same way as other services. A smoothly functioning system of communications is also a prerequistite for social and economic integration between separate geographical regions. The modernization of the infrastructure is therefore an...

During the seventies and eighties, the industries associated with the transportation of goods and people have been exposed to some profound changes. The quickening pace of technological change - with its growing emphasis on telecommunications, knowledge-handling capacity, and air transportation - is increasing the discrete character of the world economy. Thus the network structure of global development patterns is becoming more important, with metropolitan centres as key nodes and rapid transportation routes as key links. In this evolutionary situation, changes in the preferred mix of...