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Recently I went on an adventure around Europe and visited three major cities: Paris; Amsterdam; and Berlin. Throughout my travels I used many different forms of transport to get around including trains, buses, cars, ferries, and my own two feet. It was such a ce ....

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.... to go faster as well as further. Trains, planes, automobiles, space vehicles and many variations of each of these bring human beings to every corner of the world and beyond. However, motorised transportation is not only used in long distance travel, most automobile transportation takes place within urban and suburban centres. As the rate of urbanisation increased over the last century, so did the use of automobiles. Now there are more than 540 million automobiles on the roads of the world with most of these being in the developed countries 1 . Unfortunately cars cause problems, especially when there are many cars in one area such as an urban ce ....