Effect of Urbanization beginning to growth of slums.because over people in minimal area have an effect to transportation system is insufficient.Bangkok City Plan will be put to use soon for the first time after several failed attempts in the past 30 years. Bangkok will be divided into 356 blocks with 14 land-use zones clearly separating residential areas from industrial, agricultural, and recreational areas.Bangkok in the future will develop in a poly-centric fashion, whereby improved communications and transportation systems will help spread the growth of Bangkok into other areas