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M4, after junction 7 towards Heathrow, faulty speed camera

Reported via mobile in the Sign issue (NH) category anonymously at 13:47, Sat 20 May 2023

Sent to National Highways less than a minute later. FixMyStreet ref: 4576895.

I was travelling along the M4 this morning just past Junction 7 towards Junction 6, at around 4:30am (20/05/23), there was motorway road works, so the motorway was down to one lane and a speed restriction of 40mph, the speed camera (fixed speed camera) seemed to flash every car that went under, I was in the correct lane and driving at 40mph.

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  • Thank you for your report concerning Camera flashes.

    The M4 between junctions 3 and 12 has recently been upgraded to an all-lanes running motorway and includes several HADECS speed/Red X enforcement cameras, new to this section of motorway. These cameras are now operational and detecting speeding violations and Red X violations when variable speed limits and lane closures are respectively set.

    National Highways may implement reduced speed limits for a variety of reasons, to ensure the safe operation of the strategic road network for our workforce and road users. Please be aware that mandatory [variable] speed limits and Red X signals must be complied with, regardless of why they are set, and the police are responsible for enforcing the law. Penalty notices will only be issued to individual vehicles breaking the speed limit or passing under a Red X and are lane and vehicle specific. We will continue to monitor this and will arrange any work if the situation changes. If you require any further update on this issue our Customer Contact Centre is available 24 hours a day at:

    • 0300 123 5000


    Kind regards

    National Highways

    State changed to: Closed

    Posted by National Highways at 12:13, Tue 23 May 2023

This report is now closed to updates from the public. You can make a new report in the same location.