Smart motorways were plagued with a summer of extended power outages that put drivers’ lives at risk, it has been revealed.
The safety systems shut down a total of 41 times last summer, which operate by detecting breakdowns on motorways with no hard shoulder and control the networks CCTV to detect people at risk.
But between April and August 2023, there were electricity supply problems lasting a total of 541 hours across 52 separate days, with eight locations having outages that lasted more than 24 hours.
The data, released under a Freedom of Information request by the Telegraph, revealed that only two of the 41 incidents were resolved in under an hour.
One of the busiest junctions on the M25 had no signs or signals for an entire day.
The data records how ‘multiple devices’ went down in June across three junctions of the M4 in Berkshire for 1 day and 16 hours.
Also that month, the M1 was hit with issues at junction 34 near Sheffield for one day and seven hours. The longest power outage lasted four days and 22 hours in July on the M6, near Junction 18 in Cheshire.