Dual carriageway or no dual carriageway?

Dual carriageway or no dual carriageway?

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Discussion

Pica-Pica

13,837 posts

85 months

Friday 11th January 2019
quotequote all
mac96 said:
Given that this thread has been debated since last night (by people with an interest in the subject) without reaching agreement, it would seem grossly unfair to a random driver to penalise them for exceeding the speed limit, assuming their speed was under 70mph.
Surely should have 60mph signs if that is the intention. I am not saying 'according to regulation X, there should be a sign'- I am saying you can't expect anyone to know what the limit is otherwise.
As these ‘single lane duallings’ would appear to be short in length, I doubt a speed camera would be set up there - but....?

jchesh

160 posts

72 months

Friday 11th January 2019
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Swervin_Mervin said:
Setting all of the questions aside of whether this is a grey area, ask yourself this; applying some common sense, why would national design standards and the legal framework promote junction arrangements which would actually lead to a speed limit increase through a junction, when those measures are designed to enhance protection for drivers using the junction. It would make no sense - yes do 60 on this bit, but you can go up to 70 through this junction...
Yes I quite agree with this. As I said early on I'd be unlikely to be doing 70 through the area in the OP, in a car or on my bike. Nevertheless, I'm finding this an interesting discussion.

mac96

3,801 posts

144 months

Friday 11th January 2019
quotequote all
Swervin_Mervin said:
mac96 said:
Given that this thread has been debated since last night (by people with an interest in the subject) without reaching agreement, it would seem grossly unfair to a random driver to penalise them for exceeding the speed limit, assuming their speed was under 70mph.
Surely should have 60mph signs if that is the intention. I am not saying 'according to regulation X, there should be a sign'- I am saying you can't expect anyone to know what the limit is otherwise.
Doesn't seem unfair to me to penalise people for a lack of basic common sense.
Nothing to do with common sense- speed limits are arbitrary numbers and should be unambiguous.
If you are saying that it would not be sensible to drive at 70mph due to the hazards, I'd agree with you. Thread is not really about that though-its about the speed limit.

anonymous-user

Original Poster:

55 months

Friday 11th January 2019
quotequote all
Swervin_Mervin said:
mac96 said:
Given that this thread has been debated since last night (by people with an interest in the subject) without reaching agreement, it would seem grossly unfair to a random driver to penalise them for exceeding the speed limit, assuming their speed was under 70mph.
Surely should have 60mph signs if that is the intention. I am not saying 'according to regulation X, there should be a sign'- I am saying you can't expect anyone to know what the limit is otherwise.
Doesn't seem unfair to me to penalise people for a lack of basic common sense.
That's a bit unfair. How does "common sense" override what, for example, I was told on a SAC? After what I was told, unless otherwise shown by a sign, I'll always assume any lanes seperated by something physical other than markings is a DC.

jamei303

3,005 posts

157 months

Friday 11th January 2019
quotequote all
mac96 said:
Given that this thread has been debated since last night (by people with an interest in the subject) without reaching agreement, it would seem grossly unfair to a random driver to penalise them for exceeding the speed limit, assuming their speed was under 70mph.
Surely should have 60mph signs if that is the intention. I am not saying 'according to regulation X, there should be a sign'- I am saying you can't expect anyone to know what the limit is otherwise.
There are plenty of traffic situations where you need to make a diversion to the local highways authority headquarters and trawl through paper Traffic Regulation Orders in their basement archives before being sure of being able to proceed legally. That similar should occur with national traffic law is no surprise. How many people stop at South Mimms to peruse the The M25 Motorway (Junctions 23 to 27) (Variable Speed Limits) Regulations 2013

mac96

3,801 posts

144 months

Friday 11th January 2019
quotequote all
jamei303 said:
mac96 said:
Given that this thread has been debated since last night (by people with an interest in the subject) without reaching agreement, it would seem grossly unfair to a random driver to penalise them for exceeding the speed limit, assuming their speed was under 70mph.
Surely should have 60mph signs if that is the intention. I am not saying 'according to regulation X, there should be a sign'- I am saying you can't expect anyone to know what the limit is otherwise.
There are plenty of traffic situations where you need to make a diversion to the local highways authority headquarters and trawl through paper Traffic Regulation Orders in their basement archives before being sure of being able to proceed legally. That similar should occur with national traffic law is no surprise. How many people stop at South Mimms to peruse the The M25 Motorway (Junctions 23 to 27) (Variable Speed Limits) Regulations 2013
I thought that was what caused the traffic jam...smile

Pica-Pica

13,837 posts

85 months

Friday 11th January 2019
quotequote all
_Hoppers said:
Intrigued by this thread.! There's a section of road near York which appears similar in principle to the one in the OP has queried. Leading to the a19 there's a 'Dual Carriageway' sign, I've often wondered if it therefore has a 70mph limit?

https://www.google.co.uk/maps/@53.8708417,-1.04918...

Edited by _Hoppers on Friday 11th January 11:11
I looked at the OP’s stated location, and yes there is no ‘dual carriageway starts’ nor ‘dual carriageway ends’ at either end, but...what if a motorist joins from a side road? (Ignoring the fact that they would be unlikely to reach 70 by the time it changes to a single carriageway). Would a lack of indication signs that you are joining a dual-carriageway be a clue? When is it necessary to indicate that, from a side road, you are joining a dual carriageway? (It is not indicated from the side road in this location OP has chosen).

jamei303

3,005 posts

157 months

Friday 11th January 2019
quotequote all
Signs are immaterial here. When I leave my driveway I don't see a "single carriageway ahead" letting me know I can't drive at 70mph. The limits are based on the nature of the road.

mac96

3,801 posts

144 months

Friday 11th January 2019
quotequote all
To add to the general confusion as you enter the OPs dual carriageway, there is a keep left sign in the middle on the start of the reservation(OK) but a two way sign on the far right verge, which could be taken to mean that the right hand (oncoming) carriageway is itself two way. I know you would have to be an idiot to think that, but they are out there.

Really seems to be a bit of an issue with a lack of appropriate signs to deal with this unusual road design.



edit- confusion not conclusion

Pica-Pica

13,837 posts

85 months

Friday 11th January 2019
quotequote all
jamei303 said:
Signs are immaterial here. When I leave my driveway I don't see a "single carriageway ahead" letting me know I can't drive at 70mph. The limits are based on the nature of the road.
No, the ‘nature’ of the road (whether understood fully or confusedly) is the whole nub of the discussion!!!

jamei303

3,005 posts

157 months

Friday 11th January 2019
quotequote all
Pica-Pica said:
No, the ‘nature’ of the road (whether understood fully or confusedly) is the whole nub of the discussion!!!
Exactly, but it's not defined by signage, unlike a motorway.

Pica-Pica

13,837 posts

85 months

Friday 11th January 2019
quotequote all
I conclude that ‘single lane dualling’ is a highways department terminology for a particular road layout.

My take from all this is that unless I see a blue ‘Dual Carriageway Ahead’ sign, I will treat it as the esoteric ‘single carriageway dualling’ concept.

GC8

19,910 posts

191 months

Friday 11th January 2019
quotequote all
Swervin_Mervin said:
It's single lane dualling. It's not d/c. Limit is 60.
I agree on the speed, but not the definition. Dual carriage way means two carriageways and has nothing to do with the number of lanes.

Swervin_Mervin

4,465 posts

239 months

Friday 11th January 2019
quotequote all
RogerDodger said:
Swervin_Mervin said:
mac96 said:
Given that this thread has been debated since last night (by people with an interest in the subject) without reaching agreement, it would seem grossly unfair to a random driver to penalise them for exceeding the speed limit, assuming their speed was under 70mph.
Surely should have 60mph signs if that is the intention. I am not saying 'according to regulation X, there should be a sign'- I am saying you can't expect anyone to know what the limit is otherwise.
Doesn't seem unfair to me to penalise people for a lack of basic common sense.
That's a bit unfair. How does "common sense" override what, for example, I was told on a SAC? After what I was told, unless otherwise shown by a sign, I'll always assume any lanes seperated by something physical other than markings is a DC.
What even those in urban situations where there might only be physical segregation of a few metres? How long does the separation have to be before you'd think that it might/might not be d/c? Personally I'd always assume a cautious approach if I wasn't sure I knew, which is exactly what the SAC will also have told you I imagine (having done one myself recently where they did wink )

Swervin_Mervin

4,465 posts

239 months

Friday 11th January 2019
quotequote all
GC8 said:
Swervin_Mervin said:
It's single lane dualling. It's not d/c. Limit is 60.
I agree on the speed, but not the definition. Dual carriage way means two carriageways and has nothing to do with the number of lanes.
Disagree all you like, it is single lane dualling, not full dualling. As previously posted by someone else, go have a read of TD42/95.

WinstonWolf

72,857 posts

240 months

Friday 11th January 2019
quotequote all
Swervin_Mervin said:
GC8 said:
Swervin_Mervin said:
It's single lane dualling. It's not d/c. Limit is 60.
I agree on the speed, but not the definition. Dual carriage way means two carriageways and has nothing to do with the number of lanes.
Disagree all you like, it is single lane dualling, not full dualling. As previously posted by someone else, go have a read of TD42/95.
Thanks to the nuances of the English language you can have a single lane dual carriageway...

redjohn

1,665 posts

247 months

Friday 11th January 2019
quotequote all
I think people are over analysing it.

Everyone agrees there is a physical barrier so the question is is it a dual carriageway? It is a dual carriageway (as physical barrier) unless it is a traffic island. Look at the junction and you will see the right turn, go further and you see a corresponding right turn for the other direction which is now not in use. The whole strip is a traffic island to provide physical separation for traffic turning right in either direction (but only one now remains valid). Speed limit 60 (for cars etc)


jamei303

3,005 posts

157 months

Friday 11th January 2019
quotequote all
redjohn said:
I think people are over analysing it.

Everyone agrees there is a physical barrier so the question is is it a dual carriageway? It is a dual carriageway (as physical barrier) unless it is a traffic island. Look at the junction and you will see the right turn, go further and you see a corresponding right turn for the other direction which is now not in use. The whole strip is a traffic island to provide physical separation for traffic turning right in either direction (but only one now remains valid). Speed limit 60 (for cars etc)
Is this a traffic island? https://www.google.co.uk/maps/@52.0505915,-0.00203...

Edited by jamei303 on Friday 11th January 15:19

Swervin_Mervin

4,465 posts

239 months

Friday 11th January 2019
quotequote all
jamei303 said:
redjohn said:
I think people are over analysing it.

Everyone agrees there is a physical barrier so the question is is it a dual carriageway? It is a dual carriageway (as physical barrier) unless it is a traffic island. Look at the junction and you will see the right turn, go further and you see a corresponding right turn for the other direction which is now not in use. The whole strip is a traffic island to provide physical separation for traffic turning right in either direction (but only one now remains valid). Speed limit 60 (for cars etc)
Is this a traffic island? https://www.google.co.uk/maps/@52.049923,0.0025759...
Whether it is or not, there's signage to indicate it's d/c, but I'm guessing you know that wink

covboy

2,577 posts

175 months

Friday 11th January 2019
quotequote all
Where doesthis fit into the picture ?