today the duel carrageway from the depot where i work was coned off to only 1 lane there were no speed limit signs up except for the national speed limit on the lampposts ( they were painting the lamposts or something) does it then become 40 automaticaly for a hvg?
It is still a dual cariageway whether it has 1,2 or 10 lanes so still 50mph.
Rog
malcolmj:
today the duel carrageway from the depot where i work was coned off to only 1 lane there were no speed limit signs up except for the national speed limit on the lampposts ( they were painting the lamposts or something) does it then become 40 automaticaly for a hvg?
I would play on the safe side if one lane is closed it stops becoming a duel carrageway.
This would make the max speed limit unless sign posted less 40 Mph for Lgv Vehicles.
The national speed limit for for single carrageway is 40 Mph for Trucks as you have stated.
HarryMango:
It is still a dual cariageway whether it has 1,2 or 10 lanes so still 50mph.Rog
A dual carriageway is defined by what seperates the two opposing flows of traffic. If it is seperated by paint or plastic cones then it is not a dual.
Dual means two sperated flows of traffic and does not refer to the number of lanes.
26 years an Lgv Trainer:
malcolmj:
today the duel carrageway from the depot where i work was coned off to only 1 lane there were no speed limit signs up except for the national speed limit on the lampposts ( they were painting the lamposts or something) does it then become 40 automaticaly for a hvg?I would play on the safe side if one lane is closed it stops becoming a duel carrageway.
This would make the max speed limit unless sign posted less 40 Mph for Lgv Vehicles.
The national speed limit for for single carrageway is 40 Mph for Trucks as you have stated.
I would play on the safe side if one lane is closed it stops becoming a duel carrageway.
I disagree, a dual carriageway has a central reservation to physically separate the carriageways. That is what defines it, not the number of lanes in either carriageway.
If no lower speed limit was posted, the limit would still be 50.
However, I would probably ease off to 40, just to be on the safe side, if the guys were actually there working.
Exactly - so if 1 lane of a dual carriageway is coned off it is still a dual carriageway.
Although as my name is Rog and I come from Leicester I was waiting for a bullet 
Rog
If there were a contra-flow in operation then I’d say 40, if the oncoming traffic was still separated by the central reservation 50.
I hope no one takes their test driving that road as it will result in a failure if the driver does more than 40 Mph
While one lane is closed it is deemed to be a single carriageway and the speed limit reverts back to 40Mph
Why because it is coned of for safety reasons so they can paint the lamp posts.
Just like any road that passes a School now the speed limits if they were 40 Mph they have all been lowered for safety reasons to 50 Mph
Do not shoot the messanger .
I’m with ROG and Simon on this one. If there is a physical separation, then it is a dual carriageway.
On a contra-flow, there are cones that are physically separating the traffic, therefore 50, unless a lower speed is posted.
Which then brings us back to the question of what is the speed limit on a single carriageway Motorway? 
Although I am not a trucker just yet I would like to add to this.
It states nowhere in the Highway Code or Law that, just because there are cones on the road, the speed limit changes for any vehicle. If the speed limit changes it SHOULD be sign-posted to inform you. otherwise will it be as low as 30mph? no-body would know. Any change will have to be sign-posted. At the moment we have roadworks on the M69, and it is coned off and there is limit signs to 50mph in that section.
As far as I am aware this is the case. If I am wrong, please tell me and I will hold my hands up and admit my mistake.
Cheers
Newblood
26 years an Lgv Trainer:
I hope no one takes their test driving that road as it will result in a failure if the driver does more than 40 Mph
I would hope no one is trained to drive an LGV by someone who doesn’t know what is and isn’t a dual carriageway.
26 years an Lgv Trainer:
While one lane is closed it is deemed to be a single carriageway and the speed limit reverts back to 40Mph
You’re kidding, right? Please explain what relevance the number of lanes has to do with whether a road is a dual carriageway or not.
Coffeeholic:
26 years an Lgv Trainer:
I hope no one takes their test driving that road as it will result in a failure if the driver does more than 40 MphI would hope no one is trained to drive an LGV by someone who doesn’t know what is and isn’t a dual carriageway.
26 years an Lgv Trainer:
While one lane is closed it is deemed to be a single carriageway and the speed limit reverts back to 40MphYou’re kidding, right? Please explain what relevance the number of lanes has to do with whether a road is a dual carriageway or not.
If one lane is closed off it becomes a single carriageway .
Rog if you think back to when the duel carriage way on route from northampton to weedon had road works on It they had one lane closed off. All instructors were told by the examiners. ( If one lane is closed off it becomes a single carriageway Single carriage way speed limits apply )
26 years an Lgv Trainer:
Coffeeholic:
26 years an Lgv Trainer:
I hope no one takes their test driving that road as it will result in a failure if the driver does more than 40 MphI would hope no one is trained to drive an LGV by someone who doesn’t know what is and isn’t a dual carriageway.
26 years an Lgv Trainer:
While one lane is closed it is deemed to be a single carriageway and the speed limit reverts back to 40MphYou’re kidding, right? Please explain what relevance the number of lanes has to do with whether a road is a dual carriageway or not.
If one lane is closed off it becomes a single carriageway.
I get the impression from your answer that you bizarrely seem to think the number of lanes is relevant when deciding whether a road is a dual carriageway or not. This is clearly not the case as the number of lanes have no bearing at all whether a road is a dual or not. If this is not the case you will need to explain more why you think a lane closure, on it’s own, alters the status of the road. Or maybe give us your definition of singles and duals.
26 years an Lgv Trainer:
. All instructors were told by the examiners.
So this information came from the examiners. It would be a shame if people really were failed for this.
mrpj:
26 years an Lgv Trainer:
. All instructors were told by the examiners.So this information came from the examiners. It would be a shame if people really were failed for this.
Not the first time on here we have had reports of examiners showing a severe lack of knowledge. The same thing happened over the can you drive a tractor unit on a Class C debate. We had reports of examiners stating it was not legal to do so when it is. Does makes you wonder if they are failing people for non existent stuff.
Maybe in this case there was something more than a simple lane closure, such as no physical separation of the carriageways, which caused them to say this. but we haven’t been told. ROG may well have the answer if he knows the road and its situation at the time.
my understanding of the original post is a “lane” is closed, not a “carriageway”, thus it is still dual carriageway… thus 50
After reading the posts regarding this subject and after after many peoples thoughts.
I decided to settle this once and for all i called the local traffic police
My Traffic Police state … If the duel carriage way has one lane closed the speed limit reverts to 40 Mph
Now i would like to ask a few to call their local Traffic police and ask the question ( Do not ask Pc Plod as they will refer you to Traffic )
It will be interesting if all areas answer the same.
Do not shoot the messanger
26 years an Lgv Trainer:
After reading the posts regarding this subject and after after many peoples thoughts.I decided to settle this once and for all i called the local traffic police
My Traffic Police state … If the duel carriage way has one lane closed the speed limit reverts to 40 Mph
Two possibilities here, the police officer you talked to is an idiot and is in serious need of retraining, or you are being economical with the truth.
26 years an Lgv Trainer:
It will be interesting if all areas answer the same.
Hopefully officers in other areas will not be as dumb as the one in your area.
The only way the limit will alter on a dual carriageway which has a lane closed will be if signs indicate a reduction. As the number of lanes has no bearing on whether a road is classed as dual or not simply closing a lane does not change anything.
Does this strange notion only apply to 2 lane duals? What about 3 or 4 lane duals with 1 lane closed, do you make the same claim for those? What is the difference between a 2 lane dual with one lane closed and a dual with just 1 lane in each direction? Why would the former require a reduction in the speed limit but the latter doesn’t?
[/quote]
=Coffeeholic
Two possibilities here, the police officer you talked to is an idiot and is in serious need of retraining, or you are being economical with the truth
Economical with the truth. ■■?
So basically i am a liar
May i suggest before you make comments like the above you make a phone call as i have done and ask the question as i would hate for you to get told you are bieng Economical with the TRUTH
The messanger is economical with the Truth !!!
I always took the view that a “Dual Carriageway” irrespective of how many lanes there are is separated by a central reservation such as a grass verge for example and not “separated by lines continuous or broken” irrespective of how many lanes there are and unless otherwise stated the limit is 50mph.
On my advanced m/cycle test I asked the police examiner was a 4 lane road with only white lines to separate them a “Dual Carriageway” and he said NO it was a “Single Carriageway” albeit having four lanes for the purpose of speed restrictions i.e. 40 mph for goods vehicles.
How can a “Dual Carriageway” suddenly become a “SIngle Carriageway” when the centre reservation is still there and I take the same stance as “Coffeholic” as UNLESS it is SIGNPOSTED, 50MPH with the “Correct” signs with the red circle etc. then the 50 limit is still in force as if you were on a driving test would you fail for doing 40 mph for “Failing To Make Progress”?
How can the law be changed without the correct signage just because there are road works as without signs the police could regard the road as a 30 limit without informing any drivers !
Obviously there is the safety aspect of this which is right as all the workers have a right to work in a safe environment but that does not mean that the limit is “Automatically” reduced because one lane is closed, as look at M/Ways do they then “Automatically” reduce the limit to say 50mph because they have closed one lane ?