Hello all,
I was driving down from Nottingham to Maidstone on Friday. Whilst on the M25 around J25 going clockwise, I saw a couple of sets of traffic lights actually on the M25 just before going into a short tunnel.
The same was apparent on the journey back apart from traffic lights were in an overhead gantry.
Does anyone know why?
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Is it to stop traffic entering the tunnel if the exit is blocked?
Thats what they're for abroad anyway, to prevent stationary traffic in tunnels.
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