Tez özetleri Astronomi ve Uzay Bilimleri Anabilim Dalı

Transportation Systems in Turkey and Over The World

Transportation systems have to be considered and analysed as a whole while transportation demand, becoming as a natural outcome of socioeconomic and socio-cultural structure, is being evulated. It is desired that transportation system, which will be selected for both passenger and freight transport, should be rapid, economic, safe, causing least harm to envoriment and appropriate for the conditions of a country. However, it is difficult for a transportation systems to have all these properties.

Every transportation systems has advantages and disadvantages over each other. Therefore, comprehensive plans for future periods have to be prepared how the sources of the country should be reasonably distrubuted among transportation systems must be studied. Also, transportation plans have to be prepared to get coordinated operations among transportation systems while great investments are instuted in the entire country. There is no doubt that it is possible with combined transportation instead of concentration on one transportation system.

Transportaion policies in Turkey should be questioned since the level of highway transportation usage reached to %95 and level of sea transportation usage drop to less than %1 in spite of being surrounded with sea in three sides of our land.

In this study, transportation systems and transportation polies in the world and Turkey are evaluated in general and problems are analysed. Proposal are presented for the solutions of these problems.