[Talk-GB] maxspeed changes

[Brian Prangle]

How about making contact with the road experts at SABRE to answer some of
these questions? I'm sure they'd have a pretty definitive view

Regards

Brian

On 30 September 2012 22:43, Peter Miller <peter.miller at itoworld.com> wrote:

>
>
> On 27 September 2012 17:42, Jason Cunningham <jamicuosm at googlemail.com>wrote:
>
>> As I mentioned earlier on it was speed limits for roundabouts along a
>> dual carriageway that led to me doing a bit of research on UK speed limit
>> legislation.
>> My 'notes' are below
>> http://wiki.openstreetmap.org/wiki/User:Jamicu/UK_Speed_Limits
>>
>> A roundabout does not meet the given definition of a dual carriageway
>> provided by legislation, and therefore is classified as a single
>> carriageway road. Therefore a NSL roundabout can either be a NSL Restricted
>> road or NSL single carriageway road speed limit. Recently spotted that my
>> satnav already new this.
>>
>
> That does make sense.
>
> Slip road connected to dual carriageways also does not meet the definition
>> of a dual carriageway. Slip roads on motorways are not covered by NSL
>> legislation. The whole motorway network, which includes the slip roads, is
>> deliberately outside NSL legislation. Motorways are "special roads" with
>> separate legislation. If the slips roads are part of the Motorway Network
>> then they're "special roads" covered the Motorway Legislation with a
>> maxspeed for cars of 70 mph.
>>
>
> Thanks for the clarification. So what about slip roads on non-motorway
> dual-carriageways? Are these 70mph or 60mph in your view?
>
> Things can be different in Scotland. I concentrated on reading 'English'
>> legislation and case law. Having read legislation and case law I'm happy to
>> argue that British speed limit law is a mess.
>>
>> Once you understand the foibles of the legislation you'll start spotting
>> stretches of road where signs are wrong or missing. The link below shows
>> locations of street lighting around a junction.
>> http://goo.gl/maps/I8uhr (yellow for lighting for main road, and orange
>> for lighting of runabout which is technically a separate section of road.)
>> There are clearly sections of road with 3 more street lamps that mean
>> that unless otherwise signed the stretches of road are 'NSL Restricted'
>> with speed limits for cars of 30mph. Roads leading up to the lighting are
>> NSL single carriageway with speed limits cars of 60 mph. Legislation states
>> there should be signs clearly advising you that NSL Restricted begins or
>> small signs reminding you NSL single lane carries on, but they are missing
>> (I haven't spotted nsl signs while driving or when double checking today
>> using StreetView). Therefore the speed limit defaults to NSL Restricted.
>> Since drivers would expect a sign for a change in speed limit they are
>> unlikely to slow down to the NSL Restricted speed limit. Lack of signs for
>> any other change in speed limit would mean it would be impossible to
>> prosecute, but signs are not needed for NSL Restricted road and there is
>> case law to support this. A problem for drivers, and for people trying to
>> map speed limits.
>>
>
> I believe that when one starts finding errors on the ground it is a good
> indicator that you are getting good at what you are doing!
>
> Putting aside my little rant about missing speed limit signs, I think we
>> could do with proper page giving some advice of speed limits if we intend
>> to map them.
>>
>
> Or just  roll the details into the speed limits or maxspeed articles for
> now as the same sort of questions are likely to appear in other countries?
>
>
> Thanks,
>
>
>
> Peter
>
>
>
>> Jason
>>
>>
>>
>>
>>
>>
>>
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>>
>
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