Children under three travel free. Children aged three to seven pay half fare. An extensive rail network runs throughout Java. There are three classes of travel, but first-class exists only on principal expresses. There is some air-conditioned accommodation.
Traffic drives on the left.
Nearly half of the network is paved. There are good road communications within Java and to a lesser extent on Bali and Sumatra. The other islands have a poor road system, although conditions are improving with tourism becoming more important. Bus fares are about the same as third-class rail. Vehicles can be extremely crowded.