A question about speed limits

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Skipsy
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A question about speed limits

Post by Skipsy »

I just read this "UK speed limits are shown in mph. With a few exceptions, they are in multiples of 10, ranging from 20 miles per hour (32 km/h) to 70 miles per hour (113 km/h)."
Does this mean there are multiple of 5 speed limits or ones below 20 or above 70 on public roads?

(Might be false information on Wikipedia)
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Steven
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Re: A question about speed limits

Post by Steven »

Skipsy wrote: Thu Jul 09, 2020 12:24 I just read this "UK speed limits are shown in mph. With a few exceptions, they are in multiples of 10, ranging from 20 miles per hour (32 km/h) to 70 miles per hour (113 km/h)."
Does this mean there are multiple of 5 speed limits or ones below 20 or above 70 on public roads?
No. The minimum signable limit is 20mph, and the maximum limit is 70mph.

As it's put in Speed Limit:
In the UK, speeds are expressed in miles per hour, with the limits on the public highway ranging from 20 mph to 70 mph, in multiples of 10 mph: the only ones allowed by law.

Signs on private land are not subject to regulation and speed limit signs of all kinds can be seen, as well as DfT-style signs with limits sometimes set as low as 2 mph.

---
Skipsy wrote: Thu Jul 09, 2020 12:24 (Might be false information on Wikipedia)
Ah, well, there's a shocker! Surely not... :wink:
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From the SABRE Wiki: Speed Limit :

A speed limit is a regulation establishing the maximum speed at which it is permitted to drive a motor vehicle along a given road or section of road. While practical enforcement procedures vary, anyone exceeding the limit by any amount is committing an offence in law.

Current speed limits on roads in the United Kingdom have come about through many years of traffic regulation legislation. The origins go back to the early days of motoring, but perhaps the key legislation that defines our

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Re: A question about speed limits

Post by Bryn666 »

Skipsy wrote: Thu Jul 09, 2020 12:24 I just read this "UK speed limits are shown in mph. With a few exceptions, they are in multiples of 10, ranging from 20 miles per hour (32 km/h) to 70 miles per hour (113 km/h)."
Does this mean there are multiple of 5 speed limits or ones below 20 or above 70 on public roads?

(Might be false information on Wikipedia)
You can of course put any speed limit you like on private land, but it can't be enforced by the police.

A project I worked on for a large national organisation years ago asked for a site wide speed limit of 10 mph on the area we were contracted to design safe internal road layouts for, the penalty being that employees would face disciplinary action if caught speeding on site, and visitors would be escorted off and asked not to return.
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Re: A question about speed limits

Post by Chris Bertram »

So, this 15 limit in Kirkwall? Looks like a public road to me. Here as well. And here.
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Re: A question about speed limits

Post by Ruperts Trooper »

Chris Bertram wrote: Thu Jul 09, 2020 13:29 So, this 15 limit in Kirkwall? Looks like a public road to me. Here as well. And here.
I found this statement "Any speed limits below 30 mph, other than 20 mph limits or 20 mph zones, require individual consent from the Secretary of State" in a DfT Guidance for England https://www.gov.uk/government/publicati ... eed-limits which suggests other limits are possible - and there was reference to a 15mph limit for eco-towns in 2008 http://news.bbc.co.uk/1/hi/uk/7311548.stm
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Re: A question about speed limits

Post by Bryn666 »

Chris Bertram wrote: Thu Jul 09, 2020 13:29 So, this 15 limit in Kirkwall? Looks like a public road to me. Here as well. And here.
Scotland has their own powers to authorise speed limits, the law there is different to England as you know.
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Re: A question about speed limits

Post by Chris Bertram »

Bryn666 wrote: Thu Jul 09, 2020 13:53
Chris Bertram wrote: Thu Jul 09, 2020 13:29 So, this 15 limit in Kirkwall? Looks like a public road to me. Here as well. And here.
Scotland has their own powers to authorise speed limits, the law there is different to England as you know.
Maybe so, but AFAIK motor vehicle construction and use legislation is not different, and there is no requirement for speedos to be calibrated in gradations of 5mph, so it must be questionable whether enforcement is possible (notwithstanding that the streets with the limit do look quite narrow so low speeds would be advisable anyway).
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Re: A question about speed limits

Post by Big L »

Chris Bertram wrote: Thu Jul 09, 2020 13:29 So, this 15 limit in Kirkwall? Looks like a public road to me. Here as well. And here.
Is that first link from the Kirkwall in Gloucestershire?
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Re: A question about speed limits

Post by Chris Bertram »

Big L wrote: Thu Jul 09, 2020 16:19
Chris Bertram wrote: Thu Jul 09, 2020 13:29 So, this 15 limit in Kirkwall? Looks like a public road to me. Here as well. And here.
Is that first link from the Kirkwall in Gloucestershire?
Oh darnit, ignore that one, the other two are definitely from Orkney.

Fixed now in the original post.
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Re: A question about speed limits

Post by 110ffr »

Clifton Suspension Bridge did have a 25mph limit some years ago. It's a more conventional 20mph now.

I travel the length of the M3 about once a month or so; while the M3 Smart Motorway works between J 2 and 4 were going on a few years back, the temporary speed limit was 50mph, but on one occasion, all the 50mph signs had been changed to 55mph. The next time I was there, it was back to 50mph
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Re: A question about speed limits

Post by c2R »

A1151 at Wroxham has 15 mph roundals: https://www.google.com/maps/@52.7116107 ... 384!8i8192
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Re: A question about speed limits

Post by JamesA44 »

I guess this one is cheating:-
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Re: A question about speed limits

Post by WHBM »

Chris Bertram wrote: Thu Jul 09, 2020 14:14 Maybe so, but AFAIK motor vehicle construction and use legislation is not different, and there is no requirement for speedos to be calibrated in gradations of 5mph, so it must be questionable whether enforcement is possible (notwithstanding that the streets with the limit do look quite narrow so low speeds would be advisable anyway).
Enforcement is quite possible against very old vehicles which were not built with speedometers. Buses I believe did not require them until about 1950.
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Re: A question about speed limits

Post by Conekicker »

Steven wrote: Thu Jul 09, 2020 12:34 Snip

The minimum signable limit is 20mph, and the maximum limit is 70mph.

Snip
The minimum signable speed limit is normally 10mph, Traffic Signs Manual, Chapter 8, Part 1, Section D7 refers.

The maximum limit is the National Speed Limit, which is currently 70mph for certain classes of vehicle.
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Re: A question about speed limits

Post by Steven »

Conekicker wrote: Thu Jul 09, 2020 19:37

The maximum limit is the National Speed Limit, which is currently 70mph for certain classes of vehicle.
Except of course, that it requires specific 70 signage on non-motorway Special Roads rather than an NSL limit.
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Re: A question about speed limits

Post by Bryn666 »

Conekicker wrote: Thu Jul 09, 2020 19:37
Steven wrote: Thu Jul 09, 2020 12:34 Snip

The minimum signable limit is 20mph, and the maximum limit is 70mph.

Snip
The minimum signable speed limit is normally 10mph, Traffic Signs Manual, Chapter 8, Part 1, Section D7 refers.

The maximum limit is the National Speed Limit, which is currently 70mph for certain classes of vehicle.
10 being typically only for convoy vehicle systems I believe. You aren't supposed to have a "normal" speed limit less than 20 mph.
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Re: A question about speed limits

Post by Conekicker »

Bryn666 wrote: Thu Jul 09, 2020 20:12
Conekicker wrote: Thu Jul 09, 2020 19:37
Steven wrote: Thu Jul 09, 2020 12:34 Snip

The minimum signable limit is 20mph, and the maximum limit is 70mph.

Snip
The minimum signable speed limit is normally 10mph, Traffic Signs Manual, Chapter 8, Part 1, Section D7 refers.

The maximum limit is the National Speed Limit, which is currently 70mph for certain classes of vehicle.
10 being typically only for convoy vehicle systems I believe. You aren't supposed to have a "normal" speed limit less than 20 mph.
A speed limit is a speed limit :wink:
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Re: A question about speed limits

Post by PhilC »

There's a 25mph speed limit along Kewstoke Road in Weston-super-Mare. It was a toll road for many years, but tolls were only collected during the summer season during the day.

https://goo.gl/maps/7oXgLKf5o1H898U47
https://goo.gl/maps/o7u6LJ6URLYNfuu68
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Re: A question about speed limits

Post by Isleworth1961 »

PhilC wrote: Fri Jul 10, 2020 00:20 There's a 25mph speed limit along Kewstoke Road in Weston-super-Mare. It was a toll road for many years, but tolls were only collected during the summer season during the day.

https://goo.gl/maps/7oXgLKf5o1H898U47
https://goo.gl/maps/o7u6LJ6URLYNfuu68
I understand that's a private road anyway.
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Re: A question about speed limits

Post by the cheesecake man »

Skipsy wrote: Thu Jul 09, 2020 12:24 I just read this "UK speed limits are shown in mph.
The only exception I've seen is the Tyne & Wear Metro where everything is metric so they're in kph. :coat:
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