In Bangkok, the Chao Phraya River is a major transportation artery, with ferries, water taxis (the Chao Phraya Express Boat) and long-tailed boats. There are local, semi-express, and express lines for commuters, though the winding river means trips can be much farther than by bus. There is also the Khlong Saen Saeb boat service, which provides fast, inexpensive transport in central Bangkok.