[Tagging] Road hierarchy
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
(A roads), secondary (B roads), tertiary (C roads) and quaternary (U roads,
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
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
Le mer. 7 août 2019 à 14:48, Martin Koppenhoefer <dieterdreist at gmail.com> a
> 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
> > 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
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