subway system in my country

I can\'t use subway in my city. If I want to use the subway, I have to move to Uijeongbu-si or Jamsil taking the bus. They are located in the 30, 50 minutes distances. So, using bus is optimum option in my city. But whenever I go to Seoul to meet my friends or go to school, I always use subway. It is fast and it rarely delayed. Lots of people are living in South Korea which is about one hundredth of America. So, buildings and people are concentrated and it relates to traffic jam. Maybe it takes a couple of hours to go home. Considering Korea\'s traffic system, I proudly say that subway would it be first choice of transport. Lots of foreigners will be surprised at the convenience, speed and accuracy of the subway. We can go anywhere with reasonable price. On the other hand, once my mom and sister visited Japan, they were shocked because the Japanese subway was old and complicated. However, there is much loss because of free-riding. We have to prevent this problem more strictly.