The main reasons for using ballasted track in Jakarta-Bandung high-speed railway are as follows:

1. Temperature changes and geological problems may cause the expansion and contraction of the railway track, and the ballasted track can better adapt to this change.

2. Ballasted track can reduce foundation settlement, which is especially important for low-speed and ground sections.

3. The maintenance cost of the ballasted track is 30% lower than that of the ballastless track, which helps to reduce the operating cost.

However, ballastless tracks are generally used in roads with high maintenance costs such as bridges, tunnels and culverts.