Velvet wrote:

JNugent wrote:

Ambrose Nankivell wrote:

[ ... ]

... If you want to discredit speed
limits, then give examples of where they're set too low or too high,
rather than criticising signing policy.

How about 40mph on the M4?
And no, I am not referring temporary limit at a set of roadworks
(even though 40 is still extracting the urine a bit, even at
roadworks). I am speaking of a permanent limit of 40mph on part of
the M4.
Do you not agree that such a limit is *way too low* on a motorway?

And exactly where is this 40mph on the M4? Perhaps where it passes
through a built up area in London, where the lanes are narrow and it
twists with frequent junctions?

I don't know what you are trying to imply, but a motorway passing through a
"built-up area" is entirely separate from the local road network. Think of
the M6/M5 in NW Birmingham, Dudley, Walsall, etc. Perhaps you think they
should be limited to 40 as well?

The Chiswick Flyover's lanes are exactly the same width as any other
motorway lanes (12' wide). It doesn't have hard shoulders, but then, neither
do a great many 2 x 2-lane d/cs limited to 70mph - so of what relevance
could that be?

As for "frequent junctions"... there is one junction (where the A4
"becomes" the M4) at the western end and one intermediate junction (with the
N & S CRs).

Let's see... that's... er... two junctions.

You'd have to be pretty weird to class that as "frequent", wouldn't you?

I drive the M4 regularly, between central london right out to Wales.
The only place I can think that such a limit exists is where you get
close to London, and there are very good reasons for the limit at that
point.

In that case, you'll have no difficulty in explaining them.

Some more information on where your 40 mph limit on the M4 would be
useful in determining whether it is justified and thus not a valid
piece of supporting evidence; or not.

Are you denying that there is a permanent 40mph limit on part of the M4?

A funny thing to do for someone who claims to drive on it regularly.


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