Roundabout speed limit - NSL?
Discussion
I've always assumed that regardless of the speedlimit in force on the approach roads, the speed limit on a roundabout (of any size) is 30mph. Yesterday, a driving instructor told 'er indoors that the limit on a local roundabout (Ainley top, for those in sunny 'uddersfield) was ridiculous as it was 60mph. 'Er indoors argued, and asked why he thought this. He replied that it went on the speed limit of the approach road. Now, I know that four of the five approach roads have limits of 40 or 50mph, but the fifth has a GLF/NSL sign (from a 50) just before the roundabout.
So, is he right? Or is the NSL on a roundabout different to the NSL (60) on a road?
BTW, parts of this particular roundabout are comfortable at at least 60mph in the dry in a Westfield
Paul
I thought this idea originated due to the way some speedometers worked, i.e. by cable running off one axle / driveshaft? With this arrangement you'd get a wildly incorrect speed reading when cornering and therefore it was thought unfair to prosecute...
Could be something I dreamt up as a kid, though
Could be something I dreamt up as a kid, though

Not sure my Blandmobile (Mk1Mondeo) would go round it at 60, not fair I want a fun car.
Not heard of the 30 on a roundabout rule before but there are several different limits comming on to the roundabout so would be good to find out (Ive allready been proved wrong on the highway code once today). I thought most go to NSL before they reach it but cant be sure of it.
Not heard of the 30 on a roundabout rule before but there are several different limits comming on to the roundabout so would be good to find out (Ive allready been proved wrong on the highway code once today). I thought most go to NSL before they reach it but cant be sure of it.
Richard C said:
Urban myth - Its the same speed limit as the approach roads unless there are 3o signs at the roundabout
But the approach roads for this particular roundabout vary. Two are 40mph, one is 30mph (recently reduced
) and the other two are debatable. Does this mean a BiB would need to know your route before a possible prosecution? No wonder there's plenty of near misses if everyone's working to a different limit!! cmsapms said:If that happened I suspect no limit would be enforceable as technically that stretch of road would be incorrectly signed. Whichever speed limit was cited on the summons it could be argue that the other was in force and there was no case to answer. IMHO.
Richard C said:
Urban myth - Its the same speed limit as the approach roads unless there are 3o signs at the roundabout
But the approach roads for this particular roundabout vary. Two are 40mph, one is 30mph (recently reduced) and the other two are debatable. Does this mean a BiB would need to know your route before a possible prosecution? No wonder there's plenty of near misses if everyone's working to a different limit!!
victormeldrew said:
cmsapms said:If that happened I suspect no limit would be enforceable as technically that stretch of road would be incorrectly signed. Whichever speed limit was cited on the summons it could be argue that the other was in force and there was no case to answer. IMHO.
Richard C said:
Urban myth - Its the same speed limit as the approach roads unless there are 3o signs at the roundabout
But the approach roads for this particular roundabout vary. Two are 40mph, one is 30mph (recently reduced) and the other two are debatable. Does this mean a BiB would need to know your route before a possible prosecution? No wonder there's plenty of near misses if everyone's working to a different limit!!
Second that, there was an instance in the north of our county where a number of cases were dropped because of missing signs on one of the possible approach roads.
The fact that none of the accused had actually approached along that delinquent stretch of road, and had been happily driving down a 30 for a whole year in the mistaken belief it was still a 30 was irrelevant.
Sure you've not missed the signs? Easy to do.
>> Edited by Flat in Fifth on Wednesday 22 February 14:10
Most are posted to the lowest limit from the higher limit if a lower limit exists from one of the exits, so I assume this is common practice.
Ie, motorway off ramps, get to top, they go to the 40mph of the local road that runs across the top of the motorway.
Don't think I've seen many where there are roundabouts that you can enter at NSL and leave into a 30 zone without it saying 30mph or whatever...
Google Earth some coords, it'd be interesting to see the layouts...
Please, like everyone drives TO the top limit anyway. I think you'll that if the limit is NSL they won't go round at 60mph unless it's safe. Also, you give way to cars to your right, so why would it matter how quickly they are going speed limit or not?
Dave
Ie, motorway off ramps, get to top, they go to the 40mph of the local road that runs across the top of the motorway.
Don't think I've seen many where there are roundabouts that you can enter at NSL and leave into a 30 zone without it saying 30mph or whatever...
Google Earth some coords, it'd be interesting to see the layouts...
cmsapms said:
No wonder there's plenty of near misses if everyone's working to a different limit!!
Please, like everyone drives TO the top limit anyway. I think you'll that if the limit is NSL they won't go round at 60mph unless it's safe. Also, you give way to cars to your right, so why would it matter how quickly they are going speed limit or not?
Dave
Mr Whippy said:
Google Earth some coords, it'd be interesting to see the layouts...
Centre of island is 53deg 40' 10.11"N 1deg 49' 35.74"W
Mr Whippy said:
cmsapms said:
No wonder there's plenty of near misses if everyone's working to a different limit!!
Please, like everyone drives TO the top limit anyway. I think you'll that if the limit is NSL they won't go round at 60mph unless it's safe. Also, you give way to cars to your right, so why would it matter how quickly they are going speed limit or not?
Dave
I should have put a
in there
. The limit most work to is that of "lowest common denominator". It has to be said though, the sight lines on this roundabout are particularly appalling. If you look closely at the triangle of grass at the SW corner of the roundabout, you can see where the traffic regularly goes through the hedge (hedge FFS
) when they fail to make the sharp downhill left approach to the roundabout !!Something that does worry me is when people say (on a roundabout or single lane road for example) "I can't believe the limit here is 60 that's ridiculous", as if they think it's perfectly safe to do up to the speed limit on that road at any point. Scary. That seems to be the school of thought coming around though.
Mr Whippy said:
Also, you give way to cars to your right, so why would it matter how quickly they are going speed limit or not?
It seems you have not met the average Huddersfield driver, no respect for ANY highway regulations, thicker than a McDonalds milkshake and the observational skills of a one eyed bat.
One of the worst places I have ever had the misfortune to drive.
deva link said:
7db said:
On the roundabout traffic in opposite directions is separated physically so it is a dual carriageway...
Or is it a one-way street?
Don't go there!
Last time the when is a road a jewel cabbageway topic raised itself I ended up talking to Two Jags Prescott's office!
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