Modern society is, to a great extent, characterised by a tremendous growth in transportation -- the freedom to travel is a central and fundamental human value. As mobility has increased so have health problems. The number of fatalities and serious injuries caused by road traffic is unacceptable, and, while a downward trend is visible in most countries, there still remains a lot to be done. This collection of contributions by scientists and administrators presents some of the latest findings in the area of mobility and its relation to medical treatment, rehabilitation, public health and prevention.

fifteen countries in Scandinavia, Europe, Asia, Australia, and U.S.A. All of them came to Stockholm primarily because they recognize the growing im portance of networks as complex systems, and their home institutions do not offer any systematic lectures on this topic. The Networks Course was originally initiated jointly by the Summer University of Southern Stockholm Foundation and the County Council of Stockholm, the Swedish Aviation Administration, the Swedish National Road Administration, the Swedish Post, the Swedish State Railways, and Telia AB. They have all served as joint sponsors and hosts for the Course. In the year 1993 the Course also was sponsored by the Swedish Transport and Communications Research Board. All these organizations have supported the publication of a series of key lectures from the Course, to be released as a single volume entitled Networks in Action. It is the ambition of the Foundation to create continuity in its activities for the future. The board has proposed to its principals to take a decision in this direction. It is my expectation that this will be the case for the Networks Course from 1995. This book will then serve as a basic reference for use in an era when the topic of Communication-Networks will be included on a permanent basis in the Summer University's agenda."

Ake E.Andersson has always been intellectually on the move. He has selected his own track through the academic system and has formed a school of thought which has brought him international recognition. The cornerstones of his scientific interest are welfare analysis, regional economic dynamics and human capital theory. For his excellent achievements on dynamic analysis in the field of regional economics and regional planning he received the Japanese Honda Prize in 1995. This book provides a sample of the broad ranging research of Ake E.Andersson. Here some of his friends and colleagues have contributed to give various examples from the growing research field "Knowledge and Networks in a Dynamic Economy" in which he has been a great inspiration and in which he has contributed as part of his prodigious output.

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 urgent task and a precondition for carrying out the whole of Europe's ambitious political, economic and social agenda. Since the need for communication and transportation does not know any national borders, the functioning of the networks needs to be adopted to this new economic and political geography. Congestions of cities, highways, railroads, airways and tele communications must be tackled, if precious working, commuting and leisure time is not to be wasted and heavy burdens on the environment avoided. European traffic, is for example, expected to double within the next twenty years. In certain transport modes the growth is expected to be even faster - air passenger transport doubled in 10 years and goods transport on roads doubled in 15 years."

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 transport modes are inevitable. The faster and more direct modes will be favoured, individually and in combination, and there will be an increasing interest in transportation policies and the provision of infrastructure. This volume contains a collection of innovative papers presented at the First International Conference on Transportation for the Future, held in Sodertalje, Sweden in July 1988. Twenty industry leaders and prominent scientists from Europe, USA and Japan present their views about the ongoing transformation of production and distribution systems among firms striving for Just-In-Time methods, economies of scope, and a fully integrated approach to their economic activities. The future of passenger travel and infrastructure are also discussed. The resulting book presents a surprisingly consistent picture of how the transportation industries of the industrialized nations may be expected to grow and change in a long-term perspective."