On 04/08/2012 11:13, Walter Briscoe wrote:
I've just found http://www.highways.gov.uk/news/pressrelease.aspx?press
releaseid=425156

Construction of an M25 managed motorway scheme for junctions 5
(Sevenoaks) and 7 (M23) is proposed to start in 2013/14.

The press release says it will be the "first M25 'managed motorway'".
I don't know why the scheme between M3 & M4 does not qualify already.

"The hard shoulder will be converted to a traffic lane to add extra
capacity. Variable mandatory speed limits, displayed on overhead and
verge-mounted signs will help smooth the flow of traffic and reduce
congestion on this busy section of motorway."

The M25 often seizes in the AM peak between J5 & Clacket Lane Services.

It doesn't apply to the section from J10(A3) to J16(M4) because that
just has variable speed restrictions on the existing carriageway 3 or 4
lanes as appropriate. What they are talking baout here is using the hard
shoulder as an extra lane under certain conditions. They will need to
build extra refuges so that vehicles can pull right off th e road if
needed, put up lots of variable signs, and probaly lots more CCTV. I
just wish they'd do something between J10 and J12 which always grinds to
a halt for no real apparent reason.

Kevin