[1] The line is electrified between Mundŏk and P'yŏngnam Sŏho and between Ch'ŏngnam and Sŏsi.

In order to exploit coal fields in the area, the Korean State Railway opened the 22.4 km (13.9 mi) Mundŏk—Ch'ŏngnam—Namdong line in the 1970s.

[2] The sections from P'yŏngnam Sŏho to Hwap'ung and to Sŏsi were later abandoned.

[3] A yellow background in the "Distance" box indicates that section of the line is not electrified.

Closed from P'yŏngnam Sŏho, but Sŏsi Station is still in use via Samch'ŏnp'o.