Nowadays, the large number of vehicles on the roads and the sound and air pollution created by them are the major challenges to the government to mitigate. In this circumstances, many advise that rising the cost of fuels can be an effective solution, though certain individuals criticize that it would not be able to discourage people from using private cars in long run. Hence, I suppose, various actions such as promoting public transportation and bicycles; imposing taxes and ensuring new technology should be the greater way to deal with.