My favorite form of transportation is bus. Although it has a few disadvantages, I still like it because of these advantages. First, bus is very cheap and suits for everybody. Second, using bus is very convenient. Nowadays,buses are equipped air-conditioner and free wifi in order to service customer. Imaging in rush hour, a thousand of people get stuck outside with a freaking hot weather,you inside a bus enjoy air conditioner and surf Facebook. Third, besides a low cost, the convenience, it also contributes to protecting the environment. Going by public transportation can lessen the number of cars on street, and thus reduce carbon dioxide emission to the atmosphere. In conclusion, going by bus has many benefits for us and for society.