why does this happen on Motorways

[the-norseman]

Riding home from Ace cafe last night on the M1, the motorway isn't super busy everybody is doing 70+

Gantry in front is displaying NSL, I'm on cruise control about 72mph we then proceed forwards and the next gantry is showing 40mph!!

Everybody braking heavily, cars on the other side of the motorway heading southbound getting flashed left right and centre!

The repeater gantry a little further on showing NSL again!



The image above is the exact stretch to show you the distances involved, no cars broke down or anything.

[thebraketester]

To make money.

[John D.]

Someone reported debris in the road 10 miles away.

[the-norseman]

thebraketester said:

To make money.

The only reason I can think of.

[Driversmatter]

Contact National Highways and ask them. Seen it a few times. Either glitch in system or for some reason that won't be apparent to the driver.