> Most residential roads now are tagged as unclassified, I just
> have to list them, determine if the default fits, then retag them as
> highway=road.


Andy replied: "Tagging roads that you know well as "highway=road" sounds
like a mistake"
+1

I agree. Tagging highway=road means: I don't have any idea what sort of
road this is (but I can see it on the satellite imagery). I hope these
roads are never considered to be routable. The mkgmap program's standard
style defaults to that conclusion, IIRC. I think of it more or less as a
place holder, a way that needs a closer look.

Others have stated that they think of an unclassified way as something
having more significance than a residential way while still being less
important than a tertiary highway. (By the way, in Thailand,
coincidentally, a tertiary highway is the lowest class of highway that
carries a ref.). And that has been my assumption right along.

Where do we stand on that question? Is that the correct question to b
asking?

On Sat, Feb 23, 2019 at 8:16 PM Peter Elderson <pelder...@gmail.com> wrote:

> I was thinking further about the idea that came up here: deduct road type
> from the landuse=residential. It's different than current usage, and I dont
> think it is feasable.
>
>
> Vr gr Peter Elderson
>
>
> Op za 23 feb. 2019 om 14:02 schreef Andy Townsend <ajt1...@gmail.com>:
>
>> On 23/02/2019 11:36, Peter Elderson wrote:
>> > The tagging scheme should have a clear intention to facilitate
>> > rendering and routing. Then renderers and routers know what there is,
>> > so they can decide how to handle it.
>>
>>
>> To be clear, "highway=road" is used when it _isn't_ clear what the
>> classification should be.
>>
>>
>> >
>> > If residential area means that road class is highway=residential
>> > unless taggted otherwise, that should be made very clear.
>>
>>
>> No, it doesn't.
>>
>>
>> > At the moment, I don't think it is clear, and road tagging in
>> > residential areas in Nederland certainly does not follow this principle.
>>
>>
>> That's good!
>>
>>
>> > If the scheme is adopted and very clearly documented, I could adjust
>> > the residential road tagging in my village (pop 25.000) in a couple of
>> > hours. Most residential roads now are tagged as unclassified, I just
>> > have to list them, determine if the default fits, then retag them as
>> > highway=road.
>>
>>
>> Tagging roads that you know well as "highway=road" sounds like a mistake.
>>
>>
>> >
>> > The problem with such a default of course is: if the area is altered,
>> > roads may (and will) unintentionally change because suddenly the
>> > default applies or no longer applies. Also, wouldn't renderers and
>> > routers will have to deal with roads crossing the border of a
>> > residential area suddenly changing types, without a node to tie the
>> > action to?
>>
>>
>> I think there's been a miscommunication here - there is no such
>> default.  It's certainly not your fault - English as used to describe
>> roads in the UK is the problem, with "unclassified" meaning a particular
>> explicit classification.
>>
>> Best Regards,
>>
>> Andy
>>
>>
>>
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>>
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>


-- 
Dave Swarthout
Homer, Alaska
Chiang Mai, Thailand
Travel Blog at http://dswarthout.blogspot.com
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