[Tagging] Classifying roads from Trunk to Tertiary and Unclassified

yo paseopor yopaseopor at gmail.com
Mon Aug 12 00:16:15 UTC 2019

In Spain we have big problems, discussions and arguments with that
question. Last month, a French user complained about the state of a
"Nacional" (Country Main Road) classified in OSM as trunk.
These problems have one main reason. Here in Spain, in some places, there
are six degrees of public administration: European Union, Estado (Country),
Comunidades Autónomas (state), Provincia (province), Comarca (like county),
Municipio (like town)...and fourth of them have competences and decisions
about that.
Also some Comunidades Autónomas make better investments and spend more
money in some zones than Country government (because Country government
prefers to do only motorways all over Spain) . But as for more people
Country government is the most important (or the only important government
for the country) the majority of roads that depends of that government are
"defacto" the most important: trunk.
This is a mess and a disaster because you have some trunk roads
(nacionales) that don't deserve this category: roads with less width than
normal for two lanes,level crossings for all kind of tracks, passing-by
little villages,  horrible smoothness and with the same track as they were
created sixty or seventy years ago. Also you have good new 21st century
ways with only interlevel crossing, average speed of 80/100, big widths per
lane, but as they are from the government of the province ("Diputaciones")
or from the government of the "state" they are automatically primary ,
secondary or tertiary roads. This is not fair. Think about it: a government
will not spend its money in a road that is not really important.
Barcelona's Province Government manages about one thousand million euros
budget. So I assure you if  Barcelona's Province Government wants to build
a new road in a well-populated area this road would be as good as primary
or trunk.
Some people in OSM Spain want other classification criteria (not
administrative but physical) to make more objective the road classification:

trunk: 4,3,2-lane new roads (newer than twenty years, with new track), with
only interlevel crossings and exits, average speed of 80/100, and wide
lanes. It is possible bikes or agricultural vehicles would be prohibited in
these kind of ways.
primary: 3,2-lane main roads, with crossings at the same level, average
speed of 60/80, and wide lanes. All traffic should be allowed.
secondary: 3,2-lane roads, connecting small territories, crossings at the
same level, always with road marks , average speed of 50/60, acceptable
width per lane.
tertiary : 2-1-lane roads, with reference, it is not necessary to have road
marks, average speed of minus than 50, it is not necessary to have the
width of 2cars.
We want also to use governments data like average speed and average daily
traffic (ADT) . Objective data should be consulted to take these decisions.
We want to take consideration of all "Country government roads" that have
big motorways near to make lower they category. In the reference we will
always have the administrative classification like N- Country C- State
L-Local and others like CV-V for the town. One road can be trunk at first
kilometers with good track, etc. and then when sharing track with the free
motorway can be tertiary.
We also aware Spain is not the same as Australia or Africa , we know
classification criteria cannot be the same due to physical conditions in
other countries. But some of them we want a real and objective ,
non-repetitive classification criteria (using letters of the reference and
the same classification in OSM is the same, talking administratively) for
tagging Spanish Roads in Openstreetmap.

Salut i carreteres (Health and roads)

On Sun, Aug 11, 2019 at 11:37 PM Paul Allen <pla16021 at gmail.com> wrote:

> On Sun, 11 Aug 2019 at 22:10, Graeme Fitzpatrick <graemefitz1 at gmail.com>
> wrote:
>> In Australia, it's not uncommon for a Primary (& in some cases, Trunk!)
>> road to be a single lane dirt road!, & it would be nice to be able to show
>> them with the importance that they are to local residents of that area.
> There appear to be two schools of thought on this.  One is that if it is
> the only road between A
> and B then it is a primary road, even if it's a single-lane dirt track.
> The other is to adopt
> a consistent country (or state, or region) wide classification, preferably
> adhering to official
> classification if there is any, which might mean that the only road
> between A and B is a
> secondary, tertiary or even quaternary road.
> I favour the latter approach.  If there is only one single-lane track
> between A and B then
> it is obviously of importance to those in the area without it needing to
> be emphasised by
> a different colour.  Whereas rendering it as a primary road will mislead
> some people
> planning a cross-country trip into think it's paved highway all the way,
> including the
> final part of their trip from A to B.
> I suggest that before you decide which approach best suits your country
> you first check
> if there is a governmental classification scheme of highways.  It appears
> that, for Australia,
> things are rather inconsistent across the states and territories and have
> changed over
> the years.  Nevertheless, alphanumeric designations are now common amongst
> most
> states and territories and the meaning of those designations can be found
> at
> https://en.wikipedia.org/wiki/Highways_in_Australia#Prefix_letters
> After examining that, then make your decision as to whether or not the OSM
> map ought
> to reflect official designations or do its own thing.  And then discuss it
> in whatever forum
> Australian mappers use and see if you can get a consensus agreeing with
> you.
> --
> Paul
> _______________________________________________
> Tagging mailing list
> Tagging at openstreetmap.org
> https://lists.openstreetmap.org/listinfo/tagging
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