PREFACE:The principle function of this e-book is to satisfy a pronounced want for a textbook on planning, design, development, upkeep and administration of roads and visitors in the standard growing nations in Africa, Asia and Latin America. Most of those nations, which don’t embody the previous Japanese Bloc nations, are located in the tropics, the place the pure situations are totally different from associated situations in temperate areas. Additionally, the institutional points and the monetary issues confronting nations in the ‘South’ are normally totally different from the state of affairs in the ‘North’.

Nonetheless, most current textbooks on freeway engineering are geographically biased and primarily based on expertise from industrialized nations with temperate climates, or they take care of particular issues, as an illustration, soil stabilization or street constructing in the tropics. The intention of this e-book is to offer a complete account of the big selection of each technical and non-technical issues that will confront street engineers working in the Third World with out giving an in depth protection of strategies and methods.

The names of the writers of the totally different chapters seem in the listing of contributors, in the desk of contents and beneath the headings of the chapters. I’m indebted to all of them for his or her contributions. My thanks additionally go to Wendy Taylor who helped with the preparation of Chapter 24; to Poul Harboe and Per Kirkemann who wrote background materials for Chapter 25; to Arne Poulsen and Robin MacDonald who scrutinized numerous chapters; to Dr. Richard Robinson who assisted with manuscript overview, and to Sanne Knudsen who did the proofreading. Lots of the illustrations have been reproduced from different publications. The sources are quoted beneath the illustrations and on the finish of every chapter.

The duvet was designed by Ove Broo Sørensen. The preparation of the e-book has been financed partly by the COWI-fund and the Danish Worldwide Improvement Help (Danida). This assistance is gratefully acknowledged. A frequent justification for development, rehabilitation and upkeep of highways in growing nations is that improved transport services are selling street improvement. That is most explicitly demonstrated in the nice variety of instances the place street works are financed by grants from nationwide or worldwide assist companies or by loans from the World Financial institution or one of many regional improvement banks.

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