The railway system in Java is more or less a passenger-oriented system, and there are few freight services, due to the limited capacity of the tracks.
Some notable freight service in Java include the Kalimas container train and the Parcel train between Jakarta and Surabaya, petroleum trains between refineries or oil pipe terminals and oil depots, and quartz sand trains in Central Java.

But in recent years, there has been many efforts to increase freight traffic in Java by introducing the GE CC206 locomotives, as well as building double track lines that connect Jakarta and Surabaya on North Coast line to increase the number of container trains between both cities.
Many container ports have also been built on intermediate cities and towns.
This effort already attract some customers who normally shipped their products via roads.

The system in South Sumatra is rather freight-oriented.
Coal unit trains, carrying coal for an electricity plant are given priority over passenger trains.
In West Sumatra, the remaining railway line serves the cement plant at Indarung, near Padang, and in North Sumatra, several oil palm and rubber plantations are served by freight trains.
The railway system in Java is more or less a passenger-oriented system, and there are few freight services, due to the limited capacity of the tracks. Some notable freight service in Java include the Kalimas container train and the Parcel train between Jakarta and Surabaya, petroleum trains between refineries or oil pipe terminals and oil depots, and quartz sand trains in Central Java.
But in recent years, there has been many efforts to increase freight traffic in Java by introducing the GE CC206 locomotives, as well as building double track lines that connect Jakarta and Surabaya on North Coast line to increase the number of container trains between both cities. Many container ports have also been built on intermediate cities and towns. This effort already attract some customers who normally shipped their products via roads.
The system in South Sumatra is rather freight-oriented. Coal unit trains, carrying coal for an electricity plant are given priority over passenger trains. In West Sumatra, the remaining railway line serves the cement plant at Indarung, near Padang, and in North Sumatra, several oil palm and rubber plantations are served by freight trains.
Rail transport in Indonesia