M1 variable speed limits actually working?

[Eleven]

I've not used the M1 much of late, but returning from London this week I ended up doing so. I was quite dreading it as I hit it about 5pm. It was VSL for a long way out of London and although that was a nuisance, at no time did we actually stop. I don't recall that happening since... well for a long time.

So were we lucky or are the VSLs working?

[Eleven]

Seems that some people have misread my post (or didn't read it at all). I was referring to the fact that I found traffic flow to be improved and was querying whether others had found the same. This refers to the VSL section south of the Northampton mayhem.