Transcripts Released: Communication Between Train Crew and Control Centre Before Argo Bromo Collision

The National Transportation Safety Committee (KNKT) has released the investigation results regarding the accident between the Argo Bromo Anggrek train (KA 4B) and the KRL TM6000 (KA 5568A) at Bekasi Timur Station on 27 April 2026. One of the key revelations in the 141-page document is the communication between three train drivers and the Centralised Train Control Centre (PPKP).

Before the Argo Bromo Anggrek struck the KRL TM6000 at 20:52:12, a collision had occurred involving a KRL CRRC (KA 5181B) and a taxi at JPL 86 at 20:48:24. This impacted train KA 5568A, which was on the upstream track and was unable to proceed due to a crowd of people, despite having received a green aspect at Signal Block B103.

According to the KNKT report, the driver of KA 5181B contacted the Southern PPKP via an individual call by pressing the PTT button on the microphone without using the emergency call button. Information regarding KA 5568A being held at Bekasi Timur due to a crowd was not conveyed because the Southern PPKP was preoccupied with handling the aftermath of the accident at JPL 86.

The driver of KA 5568A also contacted the Southern PPKP via an individual call rather than an emergency call. The Southern PPKP control desk consists of several operating systems and communication tools, including four screens for train movement monitoring, five screens and microphones for communication, and two telephones.

This configuration requires operators to constantly divide their attention between various visual and audio information sources. Furthermore, the communication equipment at the Daop 1 Jakarta Control Centre uses external speakers as a medium for receiving radio communications. Sounds from several simultaneously operating radio consoles can be heard across the control room, creating noise pollution.

The following is the transcript of the conversations between the three drivers and the PPKP prior to the Argo Bromo Anggi Anggrek vs KRL collision:

Conversation of KRL 5181B Driver (involved in taxi collision) with Southern PPKP:

20:48:44 Driver: PK, monitor, please.

20:48:51 Driver: 5181, sir.

20:48:58 Southern PPKP: Which train, please allow me to know which train?

20:49:06 Southern PPKP: Please repeat, the modulation is imperfect, sir.

20:49:10 Driver: 81, sir, hit a car.

20:49:18 Southern PPKP: What is the situation, sir?

20:49:21 Driver: Hit a car, sir, the car is stuck.

20:49:27 Southern PPKP: Please repeat, what is stuck? Which train?

20:49:39 Driver: KA 5181, sir, the car is stuck in front.

20:49:46 Southern PPKP: 5181, what is the situation?

20:49:55 Driver: The car is stuck, sir, at KM 29, between Tambun and Bekasi.

20:50:06 Southern PPKP: Tambun to Bekasi, what is the situation? The modulation is imperfect.

20:50:12 Driver: Hit a car, KA 5181.

20:50:19 Driver: The car is stuck, sir.

20:50:23 Southern PPKP: 075 Tambun, hold position first, sir.

20:50:27 Driver: Requesting BLB (Green Wave), sir, the car is stuck.

20:51:14 Driver: PK, 5181, sir.

20:51:19 Southern PPKP: What is the condition?

20:51:47 Driver: PPKP, 5181, the car is stuck.

20:51:53 Southern PPKP: Copy that. How is the upstream track, is it safe?

20:51:57 Driver: Please repeat, sir.

20:55:00 Southern PPKP: How is the upstream track, is it safe?

20:52:03 Driver: The upstream track is safe, sir.

20:52:06 Southern PPKP: …how is it, sir?

20:52:08 Driver: The position is still… the car is still stuck.

Conversation of KRL KA 5568A Driver (the train struck by Argo Bromo) with Southern PPKP:

20:41:57 Driver: PPKP, 5568, track 6 Bekasi, what are we waiting for?

20:49:57 Driver: Hello PPKP, 5568, requesting info for Bekasi Timur?

20:50:23 Southern PPKP: 075 Tambun, hold position first, sir.

20:50:28 Driver: 5568 is still holding at Bekasi Timur.

20:55:45 Southern PPKP: PK, calling 5568.

21:05:52 Southern PPKP: Inform the ASP colleagues, especially the East Line. We will rearrange the PERKA (Train Schedule). Please assist, colleagues.

Conversation of Argo Bromo Anggrek Assistant Driver with Eastern PPKP:

20:18:44 Assistant Driver: PK, monitor bravo, requesting re-modulation from KA 4B Argo Bromo Anggrek. Carrying 11 carriages with a tonnage of 481.25 tons, waiting to depart Gambir at 20:30. What is the latest speed information for Argo Bromo Anggrek?

20:19:04 Eastern PPKP: Copy, speed at 3 points: DDT km 20+890 at 90 kpj, Karawang-Klari at 67, Kosambi-Dawuan at 77, and 260. Bravo, 3 points.

20:50:59 Eastern PPKP: Anggrek, PK calling Anggrek.

20:51:02 Assistant Driver: Entering bravo, this is KA Anggrek.

20:51:06 Eastern PPKP: Be careful at JPL Bekasi Timur, JPL 88. Increase braking, the downstream track seems to have been hit, be careful.

20:51:18 Assistant Driver: Copy JPL 88, increasing braking, downstream hit, thank you.

20:51:25 Eastern PPKP: Try to brake a little, be careful. Hopefully, there is no derailment.

20:51:33 Assistant Driver: Bravo, the signal is Red. Signal B104 is red.

20:51:40 Eastern PPKP: Copy, hold position. There is a CL (Crossing/Obstruction) ahead. It might not be a derailment, please wait.

20:53:06 Assistant Driver: This is Anggrek, bravo, hit a KRL, bravo.

20:53:10 Eastern PPKP: Oh no, copy. Could you see the block earlier?

20:53:14 Assistant Driver: The block was Red, bravo.

20:53:16 Eastern PPKP: Copy, hold position. Did you graze it?

20:53:19 Assistant Driver: [Incomplete]