[Talk-GB] Maxspeed tagging for the UK

Peter Miller peter.miller at itoworld.com
Sat Apr 9 08:20:10 BST 2011


On 9 April 2011 08:15, Peter Miller <peter.miller at itoworld.com> wrote:

>
>
> On 6 April 2011 16:53, Ed Loach <ed at loach.me.uk> wrote:
>
>> Richard wrote:
>>
>> > I'd put the number for cars (ie 70mph for a dual carriageway), and
>> > the source if it's not the number that's on the sign.
>>
>> This is similar to what I've done. For areas where a national speed
>> limit applies I have used
>>        maxspeed= (maximum speed for cars, which is the maximum
>> maximum I believe, if you see what I mean)
>> I was also tagging
>>        maxspeed:type=national
>> or
>>        maxspeed:type=national_dual_carriageway
>> (no others apply locally). I added these mainly for my use in case
>> the government ever change the maximum speed for cars on such roads,
>> as has been rumoured on occasion in the press, so that I can use
>> XAPI or JOSM or similar to update the maxspeed values more easily).
>>
>
> We seem to be nudging towards something close to a conclusion.
>
> Can I suggest that the following two methods are valid, however the second
> one should be considered to be 'better' and where it is used then it should
> be retained to avoid edit warring.
>
> I have worked a bit on the 'type' tagging to allow it to include the county
> which might be GB or UK depending on how Northern Ireland interprets the
> rules - is it always the same as the rest of the UK?
>
> On reflection the convention used elsewhere to put the IT:urban or whatever
> into the source:maxspeed tag seems to be misunderstanding the purpose of
> source tag which should be for such explanations as 'survey' or 'TfL open
> speed data' or whatever. Notice that I am have used 'GB:urban' for the 30mph
> no sign situation to match up better with 'IT:urban' etc.
>
>
I have added some more examples for each method for clarity


> Method 1
> maxspeed=national
> source:maxspeed=survey
>

maxspeed=xx mph
source:maxspeed=survey


>
> Method 2
> maxspeed=60 mph
> maxspeed:type=GB:dual_carriageway (or GB:motorway, GB:rural, GB:urban)
> source:maxspeed=survey
>

maxspeed=70 mph
maxspeed:type=GB:motorway
source:maxspeed=survey

maxspeed=60 mph
maxspeed:type=GB:rural
source:maxspeed=survey

maxspeed=60 mph
maxspeed:type=numeric sign
source:maxspeed=survey

maxspeed=30 mph
maxspeed:type=GB:urban
source:maxspeed=survey

maxspeed=30 mph
maxspeed:type=numeric sign
source:maxspeed=survey



>
> If we can agree on the above I will add it to the relevant wiki pages.
>
>
>
> Regards,
>
>
> Peter
>
>
>
>>
>> Then chriscf splattered a load of source:maxspeed tags across the
>> roads, so I added those too to other national speed limit ways I
>> tagged (to save him doing it) - after reading the wiki it seems to
>> be a fairly well used tag in some other countries, though chriscf
>> made up the UK values he used; I suggested he add them to the wiki
>> but apparently past experiences means he doesn't want to touch the
>> wiki "until there's a *major* shift in mindset there". Again he
>> distinguishes between single carriageway and dual carriageway with
>> the values he chose.
>>
>> Ed
>>
>>
>> _______________________________________________
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>>
>
>
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