Source of Leeds "screeching" noises revealed as residents kept awake overnight
and on Freeview 262 or Freely 565
The noises were reported to have been extremely loud at around 4am on a June evening.
One resident said: “What is going on?! Helicopters and loud metallic screeching noises.”
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Hide AdMore than 50 other people commented about the noise waking them up.
The source of the noise has now been located in Bramley.
A maintenance train known as a ballast regulator was conducting work on the tracks in the early hours of Tuesday, Network Rail confirmed.
The work – profiling the ballast on the track – was to enhance stability.
The maintenance train covers approximately three miles of work per night so the noise is ever moving according to Network Rail.
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Hide AdWork is very important during periods of hot weather to enhance stability on the track.
A Network Rail spokesperson told the Yorkshire Post: “There was an ‘on track machine’ which is called a ballast regulator in the Bramley area. It profiles the ballast on the track to enhance its stability, which is particularly important during the warmer months to mitigate the risk of track buckles.
“It’s a moving activity, covering approx. 3 miles per night, so it isn’t a sustained amount of noise for a long period.”