Nowadays, many kinds of public transport can be seen on the road, even though people drive their own car. It is usually on time and economical. Firstly, one of the advantages is that using public transport is very economical. Taking buses and trains is cheaper than using private cars. If people have their own car, they have to pay a lot of money for service, repairs, and insurance. It maybe will cost all the money people earn. Moreover, there are many discounts for some individuals, like students, old people, and children. They can get cheaper prices by taking public transport. Students have to go to school almost every day, and they usually take public transport to school and home. It is more economical for students. In addition, a further advantage is that using public transport can preserve the environment. It can reduce pollution, because there are less cars driving on the road, and there are fewer fumes and also less traffic jams. Furthermore, it can increase the spaces in the city, because there are less cars parking. Taking buses and trains is able to keep the environment green, However, one of the disadvantages is that using public transport is inconvenient. It can be crowded. For instance, there are always too many individuals on the same bus in rush hour. Maybe thieves are on the bus they take. The public transport does not operate 24 hours a day. People have to follow the time table, so they must wait for it. Furthermore, sometimes, it does not travel to the suburbs, so individuals have to walk for a long time to reach the place they want to go. If people have an important work at the suburb, it is inconvenient. In conclusion, although there are some problems of using public transport, people should still take it to go to school or to travel to work, because the overall advantages of taking public transport are more than the disadvantages.