Speaking of waterway transport, there are ferries between the islands in Indonesia, but they are slow, unpunctual and poorly furnished, and shipwrecks occur from time to time. Chinese tourists should avoid taking unsafe small speedboats.
In terms of urban transport, in Jakarta for example, traffic jam is terrible except for weekends and holidays. Now, there are 5 dedicated public lanes in the city, and the buses are well maintained and have cheap fares. There are other buses and minibuses operating in the city, which, however, have fewer routes. If you take a taxi, formal operators such as Blue Bird and Silver Bird are advisable. In places such as Surabaya, Medan, Bandung, and Bali, minibuses and taxis are the main options.