Nowadays, our life has changed from our ancestors’ style and in this modern life, we need some kind of supports, especially in mobile aspects. It is because people become more mobile and active rather than in previous decades. It might be the reason why some people think that much money should be spent on new line constructions, which connect some cities, to bolster up the human activities, whilst others think that it is better to use the fund for improving the existing public transports. Therefore, in this essay, I will examine both views and provide a plausible conclusion.