A major motorway in England has had its speed limit cut to 50mph for another month, putting millions of drivers at risk of a £1,000 fine. The M27, used by 120,000 vehicles daily, now carries a reduced limit as National Highways continues testing safety technology.
Why the Limit is in Place
National Highways stated that the 50mph limit on the M27 will remain for another month due to ongoing tests on Stopped Vehicle Detection systems. A spokesperson explained: "The technology being tested is our Stopped Vehicle Detection systems, which we have to rigorously test before they go live to ensure they meet our high-performance specification. This includes recording the road layout, which can only be completed once roadworks have been removed, and training the radar to reliably spot stopped vehicles and not create false alarms for reflections, signage and other factors."
Despite work crews leaving the road from April 22, the highway authority needs two more months of 50mph limits. National Highways added: "We're in the final phase of our scheme. We expect to restore the 70mph speed limit on this stretch of the M27 in late June."
Separate Lane Closure
A separate lane closure and 50mph limit will remain around junction 8 for bridge maintenance expected to start in spring 2027. This is not connected to the overlay scheme.
Overnight Closures
Overnight closures are scheduled: On Saturday 16 and Sunday 17 May, the M27 junction 4 eastbound to junction 5 will be closed from 9pm to 6am. On Saturday 30 and Sunday 31 May, the M27 junction 5 westbound to junction 4 will be closed from 9pm to 6am. Signed diversions will be in place. Dates may change due to circumstances like bad weather.
