Odd dual carriageway
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- Norfolktolancashire
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Odd dual carriageway
On my latest sortie into Norfolk I was driving along a rural side road in the middle of nowhere near Wroxham when I came across a "Dual Carriageway Ahead" sign. Thinking it was a mistake I was surprised to find a sort of D2 separated by trees.
Are there other examples of these types of D2 on minor rural roads?
https://www.google.co.uk/maps/@52.75497 ... 312!8i6656
Are there other examples of these types of D2 on minor rural roads?
https://www.google.co.uk/maps/@52.75497 ... 312!8i6656
Re: Odd dual carriageway
That's D1, not D2!
Yes, there's a few - one in Kent and a more famous one in Wales. I think we've had threads about them before, but "S1" is too short a search term for the forum software!
Yes, there's a few - one in Kent and a more famous one in Wales. I think we've had threads about them before, but "S1" is too short a search term for the forum software!
Chris
Roads.org.uk
Roads.org.uk
Re: Odd dual carriageway
Yes, that's definitely one of the big problems with our chosen field of study and the forum software - lots of what we want to search for is two characters - I was trying to search for an A1 NI thread the other day... And that's one of the reasons I try and link wiki talk pages to forum threads, so that I can ever find anything!
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Re: Odd dual carriageway
There's also the one on Mull, where the road goes from "dual carriageway" to single track in a couple of miles: https://goo.gl/maps/7VFKgAEZEMvMbPSA8
- Ruperts Trooper
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Re: Odd dual carriageway
Use Google, eg "sabre-roads A1 NI"c2R wrote: ↑Thu Sep 12, 2019 21:29Yes, that's definitely one of the big problems with our chosen field of study and the forum software - lots of what we want to search for is two characters - I was trying to search for an A1 NI thread the other day... And that's one of the reasons I try and link wiki talk pages to forum threads, so that I can ever find anything!
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Re: Odd dual carriageway
Thanks for the tip, I'd not thought of that.Ruperts Trooper wrote: ↑Thu Sep 12, 2019 22:11Use Google, eg "sabre-roads A1 NI"c2R wrote: ↑Thu Sep 12, 2019 21:29Yes, that's definitely one of the big problems with our chosen field of study and the forum software - lots of what we want to search for is two characters - I was trying to search for an A1 NI thread the other day... And that's one of the reasons I try and link wiki talk pages to forum threads, so that I can ever find anything!
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Re: Odd dual carriageway
Odd that they decided to have the "Dual carriageway ahead" sign. I believe its primary purpose is to let angry drivers in a rush that there will be an opportunity to overtake ahead soon, rather than risking an overtake now (due to most DCs having more than 1 lane). And not so much that the sign is used and placed out there for the sake of letting drivers know there's a dual carriageway ahead.
For example, a DC ahead sign was removed before the southernmost part of the A24 DC between Findon and Worthing, because the first 1KM of the DC is now a D1 (used to be D2, but now has turning lanes), therefor drivers cannot overtake (at least sensibly).
https://www.google.co.uk/maps/@50.85905 ... 312!8i6656
For example, a DC ahead sign was removed before the southernmost part of the A24 DC between Findon and Worthing, because the first 1KM of the DC is now a D1 (used to be D2, but now has turning lanes), therefor drivers cannot overtake (at least sensibly).
https://www.google.co.uk/maps/@50.85905 ... 312!8i6656
Re: Odd dual carriageway
Just read the TSM, i'm not far wrong.
Chapter 4 - 5.3.2
Chapter 4 - 5.3.2
Further advance warning up to a distance of two miles may also be given by a sign to
diagram 818.1. This sign may be used to encourage drivers to delay overtaking until the dual
carriageway is reached. Distances greater than two miles are not permitted, as this might result
in impatient drivers trying to overtake on an unsuitable length of road.
Re: Odd dual carriageway
I may be wrong, but I'm sure I have seen one with "5 miles ahead", something tells me it could have been on the A1 somewhere around Berwick.jervi wrote: ↑Fri Sep 13, 2019 04:28 Just read the TSM, i'm not far wrong.
Chapter 4 - 5.3.2Further advance warning up to a distance of two miles may also be given by a sign to
diagram 818.1. This sign may be used to encourage drivers to delay overtaking until the dual
carriageway is reached. Distances greater than two miles are not permitted, as this might result
in impatient drivers trying to overtake on an unsuitable length of road.
- Dan Lockton
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Re: Odd dual carriageway
When I was a kid I spent hours poring over a collection of OS maps my parents had, and this particular dual carriageway, as marked on the Landranger, fascinated and mystified me immensely*. I imagined maybe it was some kind of test track, or an old runway, or something (as it's near Coltishall), and living hundreds of miles away, never got the chance to see what it was really like. When Google Streetview came about, I think this was one of the first places I ever looked at!Norfolktolancashire wrote: ↑Thu Sep 12, 2019 20:53 https://www.google.co.uk/maps/@52.75497 ... 312!8i6656
*Another place was the B-roads between Thetford and Watton, disappearing and becoming a danger zone between the early 60s and the 70s, which I now know was the Stanford Training Area, but I imagined was due to some terrible disaster.
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Re: Odd dual carriageway
As a total tangent, what is the Sabristi-speak for a D2 that has been hatched down
Re: Odd dual carriageway
I don't think there is one, but "D1.5" would be a sensible coinage. (I guess "WD1" would be consistent with other usage, but sounds ridiculous.)
Re: Odd dual carriageway
Road as described like this one https://www.google.co.uk/maps/@50.86459 ... 312!8i6656Micro The Maniac wrote: ↑Wed Sep 18, 2019 13:20As a total tangent, what is the Sabristi-speak for a D2 that has been hatched downto oblivion? D1 seems inadequate...
I'd just say D1.
While the road surface may be wide, the actual driveable space is still restricted to one vehicle, although often I don't see overtaking restrictions (either signed or solid white lines) on these types of road, so I wouldn't call it an D1.5
Sure you could call them WD1 though.
- the cheesecake man
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Re: Odd dual carriageway
It does. It names me think not of a road layout but of the first of 39 unsuccessful attempts to invent WD40!
- Chris Bertram
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Re: Odd dual carriageway
It's the postcode covering central Watford, isn't it?the cheesecake man wrote: ↑Wed Sep 18, 2019 21:23It does. It names me think not of a road layout but of the first of 39 unsuccessful attempts to invent WD40!
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- the cheesecake man
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Re: Odd dual carriageway
NopeChris Bertram wrote: ↑Wed Sep 18, 2019 21:37It's the postcode covering central Watford, isn't it?the cheesecake man wrote: ↑Wed Sep 18, 2019 21:23It does. It names me think not of a road layout but of the first of 39 unsuccessful attempts to invent WD40!
Re: Odd dual carriageway
It used to be. The WD1 and 2 postcodes were renumbered a few years ago and the town centre is now in WD17!Chris Bertram wrote: ↑Wed Sep 18, 2019 21:37It's the postcode covering central Watford, isn't it?the cheesecake man wrote: ↑Wed Sep 18, 2019 21:23It does. It names me think not of a road layout but of the first of 39 unsuccessful attempts to invent WD40!
Re: Odd dual carriageway
It's dual one lane even if the width is more so just stick with D1.
Bryn
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Terminally cynical, unimpressed, and nearly Middle Age already.
She said life was like a motorway; dull, grey, and long.
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- Ruperts Trooper
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Re: Odd dual carriageway
Most drivers assume (wrongly) that dual carriageways must have 2 lanes, ie D2, but since D3 is used here for 3 lane dual carriageways then D1 is appropriate for single lane dual carriageways.
Lifelong motorhead