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From: Phil Bradby on 18 Jun 2010 18:11
In advance of a steep hill, signs advertising its gradient are often
present. This lets drivers know exactly what to expect.

For bends, there is just a bend sign - it's the same for a hairpin or for
a slight inflection in the road.

There obviously must be a sensible numerical measure of how sharp a bend
is - the radius or something like that. In fact, I vaguely remember
reading somewhere that there is a precise numerical limit on how sharp a
bend can be on a motorway-grade road. So why not provide this information
on signs, so that drivers have the maximum amount of available
information to judge how severe a bend will be? It may take a while to
learn what the different numbers mean, but in the long term it could be
very beneficial.
From: Nick Finnigan on 18 Jun 2010 18:28
Phil Bradby wrote:
> In advance of a steep hill, signs advertising its gradient are often
> present. This lets drivers know exactly what to expect.
>
> For bends, there is just a bend sign - it's the same for a hairpin or for
> a slight inflection in the road.
>
> There obviously must be a sensible numerical measure of how sharp a bend
> is - the radius or something like that. In fact, I vaguely remember

But a slight infection may have a smaller radius of curvature than a hairpin.

> reading somewhere that there is a precise numerical limit on how sharp a
> bend can be on a motorway-grade road. So why not provide this information

That depends on the superelevation /camber too. Even if the limit is
exceeded, it just means there will be a sign indicating a bend.

> on signs, so that drivers have the maximum amount of available
> information to judge how severe a bend will be? It may take a while to
> learn what the different numbers mean, but in the long term it could be
> very beneficial.

How?
From: Conor on 18 Jun 2010 20:10
On 18/06/2010 23:11, Phil Bradby wrote:

> There obviously must be a sensible numerical measure of how sharp a bend
> is - the radius or something like that.

Rally drivers use such a system.

Somehow I doubt your average driver would know what

"4 right tightening into 2 then 2 left opening out to 4 left"

would mean.

To me it means an S bend that tightens as you enter it.


--
Conor www.notebooks-r-us.co.uk
From: Graham Harrison on 19 Jun 2010 02:30

"Phil Bradby" <nospam(a)nospam.com> wrote in message
news:hvgqv8$i0i$1(a)speranza.aioe.org...
> In advance of a steep hill, signs advertising its gradient are often
> present. This lets drivers know exactly what to expect.
>
> For bends, there is just a bend sign - it's the same for a hairpin or for
> a slight inflection in the road.
>
> There obviously must be a sensible numerical measure of how sharp a bend
> is - the radius or something like that. In fact, I vaguely remember
> reading somewhere that there is a precise numerical limit on how sharp a
> bend can be on a motorway-grade road. So why not provide this information
> on signs, so that drivers have the maximum amount of available
> information to judge how severe a bend will be? It may take a while to
> learn what the different numbers mean, but in the long term it could be
> very beneficial.

I thought that's what things lived advisory speed plates under bend signs,
chevrons and even "bend tightens" signs are for. There's enough street
clutter around, let's not add to it.

From: Steve Firth on 19 Jun 2010 12:22
Conor <conor(a)gmx.co.uk> wrote:

> Just quite how you are expected to muffle the
> screams when trying to read signs with that on, I don't know.

Gaffer tape isn't just for securing 10 tonne loads of steel to a flatbed
you know?
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