On 26/09/2018 17:33, Philip Barnes wrote:
On Wed, 2018-09-26 at 17:18 +0100, Tony Shield wrote:
From the examples given it seems that passing the facing sign is
the limiting event, the end of the restriction may be posted with a
grey end of restriction sign; surveying them could be a nightmare
if the road/way is tagged - the restriction can be several miles
and in one direction.
I have never known such a restriction to be only in one direction.
The way it's actually done, from a legal perspective, is to put a
Traffic Restriction order (TRO) on a very short length of road, and then
only put the signposts at one end of the stretch.
Using ascii art, it looks a bit like this:
-----------------<==-----------------------
where - is unrestricted road, = is restricted road, and < is a sign
facing in that direction (ie, left in this case).
Because a TRO needs signs to be enforceable, that effectively makes it a
one-way restriction as only traffic approaching from the left sees the
sign. It's a bit of a hack, but quite a common one.
That's as opposed to a fully restricted road, which would be TRO'd and
signed like this:
-----------<================================================>-------
I hope that makes sense. It's a bit difficult to explain!
Mark
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