Speeding course and room of denial.

[glasgowcyclist]

Only if there's a central reservation. If there isn't a central reservation the speed limit is still 60mph.

Well, without a central reservation it can’t be a dual carriageway. That’s why the NSL on a road like that will be 60mph.

 

[Gunk]

Conversely, a road with one lane in each direction but a central reservation IS a dual carriageway and, however inadvisable it is, the NSL there is 70, not 60.

A449
https://maps.app.goo.gl/91rs9T1KHqwXx5xA8?g_st=ac

There is one like that between Cirencester and Letchlade about 1/4 of a mile long, the sat nav shows the speed limit at 70 mph, completely bizarre

 

[Brandane]

My favourite "dual carriageway" is this little lane - or pair of little lanes actually. It's got two carriageways, one in each direction, and a load of greenery between them so it's a dual carriageway. But it's also a (pair of) small lanes. It's about 800m/half a mile long

Quite why it exists like that I don't know.

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Which is a good example of how a dual carriageway doesn't always mean multiple lanes in each direction. A DC can be a single lane in each direction, and if it's a national speed limit area, then it is 70mph (for normal cars and motorbikes).

 

[Gunk]

Which is a good example of how a dual carriageway doesn't always mean multiple lanes in each direction. A DC can be a single lane in each direction, and if it's a national speed limit area, then it is 70mph (for normal cars and motorbikes).

I’m an expert at this stuff, I’ve been on three speed awareness courses!

 

[Profpointy]

I’m an expert at this stuff, I’ve been on three speed awareness courses!

You'll be getting the hang of it soon.
Is there an advanced version you can do next time?

 

[Dogtrousers]

You'll be getting the hang of it soon.
Is there an advanced version you can do next time?

Just don't indicate while you're speeding

 

[icowden]

Ah my knowledge comes from the early 80's when I rode motorbikes.

Mine is from the early 1990s when it was "they are mostly 60mph but non-urban dual carriageways can be 70mph". Presumably someone at some point decided that was incomprehensible to most sane people and that "number signs" or "national speed limit" signs were probably a better way of doing it.

 

[HLaB]

My favourite "dual carriageway" is this little lane - or pair of little lanes actually. It's got two carriageways, one in each direction, and a load of greenery between them so it's a dual carriageway. But it's also a (pair of) small lanes. It's about 800m/half a mile long

Quite why it exists like that I don't know.

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I'm guessing for construction reasons. Looking at the contours there could be quite a height difference between carriageways, if it was one carriageway it'd be too much.

 

[Ming the Merciless]

Ah my knowledge comes from the early 80's when I rode motorbikes.

National speed limit for Dual Carriageways in early 80s was 70 mph.

 

[pawl]

I wonder how many drivers think the speed limit signs ar a minimum limit .I now one driver who considers it to be so My BIL was driving us home after returning from a lunch time visit We we’re coming towards the village which is 30 MPH at 40 mph I warned him of the speed limit was well there’s no traffic about .I did ask him if his vision is capable of seeing round the blind bends this road consists of.Needless to say he was not a happy bunny. One of these days he is going to take one of these blind bends without slowing down to find a broken down tractor blocking the road
When I was being instructed for my advanced motor cycle test to keep the speed consistent with your seeing distance.

 

[raleighnut]

Mine is from the early 1990s when it was "they are mostly 60mph but non-urban dual carriageways can be 70mph". Presumably someone at some point decided that was incomprehensible to most sane people and that "number signs" or "national speed limit" signs were probably a better way of doing it.

Back in the late 60's I used to visit my Uncle on Saturdays and just after 12 he'd head off to the golf club for a few beers and a basket meal taking me with him. Uncle Jack still regarded the signs as 'De-Limit' and as soon as we cleared the village he'd push the car up to well over the ton, it was a Vandem Plas Princess 4 Litre R

 

[gbb]

That is unusual. Normally they won't send out a ticket until 35 in a 30.

Mine was 32 in a 30, which inevitably means my speedo was reading iro 35 perhaps ?

I remember at the time thinking christ, there's not much leeway there then, less than I thought tbf.

But then, it's a busy street, shops, ped crossings junctions etc so perhaps that's why. Sadly I passed it at around 6am when there was hardly any traffic out at all. Perhaps the tolerance is dictated by the specific local risk/ geography

 

[sheddy]

Do driving instructors explain vanishing points to students these days (or is the technique considered to be too advanced) ?

 

[Alex321]

Only if there's a central reservation. If there isn't a central reservation the speed limit is still 60mph.

Don't ask how SWMBO knows this

If there is no central reservation, then it isn't a dual carriageway for the purposes of speed limits.

 

[Alex321]

Ah my knowledge comes from the early 80's when I rode motorbikes.

It was 70 for cars on dual carriageways when I passed my test in 1979.