[Tagging] Road hierarchy

Jérôme Seigneuret jerome.seigneuret at gmail.com
Wed Aug 7 13:54:28 UTC 2019

*Also the presence of shops and pubs may in some context indicate the
principal road.  *

Depend of contexte because if this is a living_street I not sure that is a
good idea to set this as principal road for vehicule... This is why there
is a global contexte and others distinctives properties usages

Graph can't be the same for all type of users.

Default graph is for biggest usage. In general for standard vehicle...

I explain in french list why you don't cut a major (primary, secondary,
tertairy) road by a living_street because that have an impact on routing

So I Think it's necessary to explain why primary, secondary, tertiary is
also used because users don't respect the abstraction schema just because
there is a signalisation on the spot (for exemple living strret with 50m

The explanation is "Opentreetmap store the real life, or store what I can

I understand @Paul Allen message
The UK has four official, government-assigned classifications of through
roads: primary
(A roads), secondary (B roads), tertiary (C roads) and quaternary (U roads,
where U
unfortunately stands for "unclassified" which some mappers misinterpret as
meaning "uncategorized").  There are also motorways (level 0 in the 1-4
and trunk roads (level 0.5 in the 1-4 hierarchy).

There is same official comportment in FR but ther is a ideology who would
like set it on city only base with the density of traffic, size of road
or/and speed or/and low
For me this is a spiderweb to redirect A > B with panel direction to
Country,Region city, Departement city, Major sub departemental city and
In big town there is same problem to redict trafic to  borough
<https://wiki.openstreetmap.org/wiki/Tag%3Aplace%3Dsuburb>, quarter
When GPS didn't exist there is only traffic_signs and you set a road map
with place direction.

Road in neighbourhood is for me globaly residential exept in plot because
this is highway=service+service =alley or service=driveway

Cheers Jérôme

Le mer. 7 août 2019 à 14:48, Martin Koppenhoefer <dieterdreist at gmail.com> a
écrit :

> sent from a phone
> > On 7. Aug 2019, at 13:26, Paul Allen <pla16021 at gmail.com> wrote:
> >
> > As always, there are compromises to be made.  But in much of the UK (and
> probably
> > much of elsewhere) mapping a road that is both a tertiary (or higher)
> route and which
> > also has houses along it as residential is not the best way of dealing
> with the
> > problem.
> yes, the network of the connection grid can be observed inside settlements
> as well. In the typical case you can clearly observe a road hierarchy,
> examples for distinctive properties may be: right of way on crossings,
> signage, traffic lights, speed limits, road width/number of lanes, presence
> of through traffic, etc.
> Also the presence of shops and pubs may in some context indicate the
> principal road.
> Cheers Martin
> _______________________________________________
> Tagging mailing list
> Tagging at openstreetmap.org
> https://lists.openstreetmap.org/listinfo/tagging

Jérôme Seigneuret
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