[2][citation needed] The locomotives' operation have started in 2013, and become Indonesian Railway's main workhorses for hauling trains.

These locomotives are operated along the Java main line[3] for hauling freight and passenger train, and along South-Sumatra and Lampung Line for hauling freights, mainly coal service from Tanjung Enim to Kertapati.

The first double cabin locomotives were the GE CM20EMP's predecessors, such as CC200s (Alco-GE UM 106T), BB301s and BB304s (Krupp M1500BB), and BB305s (built by CFD).

[5][6] But, due to the latest rule from Indonesia Government's Ministry of Transportation, every new locomotive should have no 'long-hood' position, to decrease the number of accidents.

[7] This is related to limit sight of the engineer when the locomotives move on long-hood position.

[citation needed] Additional 50 locomotives were ordered in 2014, with the first-39-locos arriving on 14 August 2015,[3] and directly be brought to Pengok, Yogyakarta.

While its predecessors use Wabco AA2 with factory note tuned to D, G (play perfect 4th mid C), the CC206 locomotives use Nathan 3rd gen P2 (Bell No.