TEHRAN LONG TERM URBAN RAIL PLAN

Greater Tehran is currently one of the most populated mega cities in the world with an estimated population of 14 million inhabitants and 13 million daily motorized trips. Improving the Public Transportation has become crucial in Tehran when the increasing road congestion jeopardizes air quality as well as economy profitability of the city workforce.Due to the important changes in the population, vehicle supply, the great modifications of theland use, new urban development and also opening of 4 urban rail lines and the new road infrastructure implementation of Tehran since the last traffic studies in 1970's, it was essentialto update the urban public transportation strategy development. The proposed transportationsystem of Tehran would have to meet not only the growing demand for transportation but also the urban development expansion of the city. In addition, the transportation system had tosatisfy the inhabitants rising expectations for quality of life and preservation of the environment.