A tragic train collision occurred near Llanbrynmair, Powys, on the Cambrian line, resulting in the death of a man in his 60s and injuries to 15 others. The Rail Accident Investigation Branch (RAIB) is probing the incident, which is noteworthy as it marks the first head-on train crash in the UK this century. Early investigations suggest that the train may have entered a wheel slide while braking, potentially related to leaves on the track, a common hazard in autumn. Witness accounts describe a driver warning passengers to brace for impact moments before the crash, indicating a low-speed collision. The RAIB will assess various factors, including black box data and signaling systems, to determine the cause of the accident. Local officials and investigators are particularly focused on the functioning of new digital signaling technology and the presence of foliage on the tracks.