Regarding the speed limits on the M4; work is in progress installing variable speed limit stuff on that section. I am not normally a fan of a blanket 50 limit, but (unless someone cares to correct me) it does seem to have reduced the number of jams. Unfortunately (or perhaps predictably) many motorists have yet to learn that the lane markings have been changed around junction 29 (A48M) with the result that we still suffer mimsers in the middle lane, unaware that they will no longer be irreversibly sucked into Cardiff!
I do think the 50 limit carries on for a junction too far westbound though.
Last edited by: Harleyman on Tue 2 Nov 10 at 19:42
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