Bangkok, the capital and the largest city in Thailand, has been facing traffic congestions for decades. It has led to many subsequent losses and damages, example stress of people and economical loss. Therefore, several concerned government agencies have made their efforts in improving the situation. Particularly affecting Ecosystems in the country in the field of pollution and accidents. However, the problem continues to worsen and becomes even more complicated due to the continuing expansion of city and increase of population. In my opinion, this problem must be tackled because it is a big issue and most of people, especially who live in Bangkok, are suffering from that.