Spain train crash: Audio reveals chilling exchange before deadly collision

 According to the recordings published by Spanish outlets including El País and RTVE, a technical problem had disrupted the automatic signalling system, forcing trains on the affected stretch to stop. The system helps control train movements and prevents trains from entering sections of track when it may be unsafe to do so. According to the recordings published by Spanish outlets including El País and RTVE, a technical problem had disrupted the automatic signalling system, forcing trains on the affected stretch to stop. The system helps control train movements and prevents trains from entering sections of track when it may be unsafe to do so.