M4 smart motorway overnight maintenance Southwest M4 J19 – J20 (Image: Google Maps)
National Highways has released a statement saying there will be planned closures tonight and Friday.
Roadside technology planned overnight maintenance will occur from Thursday September 26 2024 overnight into Friday 27 September between 10.30pm -5.00am Southwest M4 J19 – J20.
As a result of essential technology maintenance, smart motorway stopped vehicle detection and/or the ability to reset electronic signs and signals will not be in operation along sections of the motorway, for up to 30 minutes at a time.
A spokesperson for National Highways said "We have well-rehearsed plans and mitigations in place, including extra traffic officer patrols, increased CCTV monitoring, and when required, reduced speed limits."
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