Taiwan is an island so air transportation is used a lot. There is two internatiional airports and sixteen domestic ones. It is conveniet for passengers from America, Japan, Singapore, Philipines, Thailand, Indonesia, and Hong Kong. Chiang Kai-shek International Airport (CKS) and Kaohsiung International Airport are the only international airports in Taiwan. There are three main railways in Taiwan which are West Line, East Line, and South Circle Line. They play an important role in the local daily life. There is also buses. They are Dragon Bus, Taichung Bus, and Yalan Bus. The communication is cellphones, internet sites, visiting houses, going out to eat in the streets, and driving around with friends.