It seems to have a crossed wire. It some how knows there was a threat in its circuit and... Fixed it self? Also the alarm sounder sounds a bit off tone
Perhaps there's two signal boxes that control the crossing in case the other is preoccupied, and one of them cleared it while the other tried to keep it shut?
The emergency sequence is used when an MCB (Full barrier crossing) lowers fully with someone trapped inside. The sequence will start by the barriers re raising and the alarms will reactivate. Once the crossing is clear the barriers will lower again and the crossing will go back to normal.
UK Level Crossing Spotter & Trains how it works is when you press the button, a request is sent to the signalmen who cancels it and raises. It’s the same for emergency sequence. When you press it, it sends a request and it get cancelled when either Emergency sequence is pressed or raise is pressed.
@@UKLCSandT oh I was saying is the alarm supposed to sound like that tho it sounds like the alarm is broken but it might just be the alarm when in emergency sequence
@@TDSWar I think it's caused by two different alarm tones clashing, the crossing was (for some reason as it was closed a month later) revamped in 2019. The South East LC channel has a vid of it afterwards, and the alarms, despite being audibly repaired, still make that weird noise
@@Newtownabbeyist208 yeah I know that, but I don’t have any way of getting this back again from when it was originally filmed. If I save it from RU-vid it will just give me the date and time it was uploaded.