C'est un peu dommage d'introduire un faux virage sur l'autoroute alors que le placement=right_of:1 permet justement de mapper simplement, d'avoir un bon rendu naïf, tout en étant précis.

Bonsoir, je pensais au tronçon de route du pont de l'A40 à Valleiry.

La règle générale dans OSM est de tracer un segment par chaussée, ce qui fait 2 segments parallèles pour les routes à chaussées séparées par un terre-plain central, et un seul segment sinon.

Pour mapper les voies d'une chaussée, il existe l'attribut osm.wiki/Lanes et ses nombreuses déclinaisons qui permettent de préciser le sens de circulation, la destination, la vitesse, les restrictions de véhicule, de chaque voie. Le style https://josm.openstreetmap.de/wiki/Styles/Lane_and_Road_Attributes de JOSM permet de visualiser les voies, mais il est assez laid et sommaire.

Pour les restriction de changement de voie, c'est l'attribut change=* sont les valeurs yes, no, not_right, not_left, permettent d'indiquer précisément ce qui est permis.

Bonjour, la route de Saint-Julien-en-Genevois est-elle vraiment devenue une route à chaussées séparées?

Ce changement a laissé les tags sur les lanes dans un état incohérent, je répare.

Cette modification laisse des données dans un état incohérent concernant les lanes (par ex. lanes=2; turn:lanes=none|none|slight_right.
Je remets tout ça en bon état.

Je ne sais pas.
Cordialement, Marc

Pourquoi inventes-tu des ponts qui n'existent pas ?
way/1380864171#map=19/46.237128/5.985370

Bonjour, elle était en service avant, sans doute un mapping pour le rendu. J'ai lu que c'était une route pastorale, donc track me paraissait naturel, comme les autres chemins carrossables autour.
Mais la route dispose de signalisation routière, donc unclassified est peut-être préférable.

Hello, it was it the "Canton de Genève, Orthophoto 2021".
But we can see in "Ortho Express 2023" that it is no more.

In fact there was already node/139446600 created 17 years ago that marks the highest point. It is also probably better placed according to the level lines and https://noms-geographiques.app.ge.ch/voie/geneve/chemin-des-arales

Hello, what is the source for the position of Geneva high Point?

Yes, coming from the roundabout I saw sign 4.01 without any speed limit, implying a 120 km/h limit. Coming from the expressway through the tunnel, there is a 40 km/h limit, lifted before the junction with the road from roundabout, implying a 100 km/h limit. The signs are inconsistent.

Inventer des ponts inexistants n'est pas une "résolution", c'est une erreur.

Thanks, a copy-paste error.

Hello SomeoneElse,

You are right, being a provincial capital is a criteria to consider. Being a destination with signs on major roads is also a criteria (but I found more Redruth than Truro).

I read in Wikipedia about Cornwall that "the largest settlements are Falmouth (23,061), Newquay (20,342), St Austell (19,958), and Truro (18,766)." Is Wikipedia wrong, or have you been misled by the OSM tagging when writing that Truro is the largest settlement in Cornwall?

To stay on Wikipedia, I just read https://en.wikipedia.org/wiki/City_status_in_the_United_Kingdom and the very first sentence ends with: " which might or might not meet the generally accepted definition of cities."

Still in Wikipedia, Truro is not in most list of cities I read: https://fr.wikipedia.org/wiki/Liste_de_villes_du_Royaume-Uni, https://nl.wikipedia.org/wiki/Lijst_van_grote_Britse_steden, https://ro.wikipedia.org/wiki/Lista_ora%C8%99elor_din_Regatul_Unit. It is in https://de.wikipedia.org/wiki/Liste_der_St%C3%A4dte_im_Vereinigten_K%C3%B6nigreich but in a secondary list.

In fact, I don't see how a sign with the word "city" can be of any relevance for OSM. The "city" in "place=city" is just a computer code that could be renamed overnight to "settlement_level_1". I'd go so far as to say that it were the case from the start, mapping of place=* would have been much much more consistent across the world. It would also be clearer for many non-native English speaker. For example, the difference between city and town is a bit mysterious to me, both being translated as "ville" in French.

Hello Andy, I didn't know the wiki was barely read, thank you for giving a link to https://community.openstreetmap.org.

I won't change the map data. I have written in osm.wiki/Talk:Tag:place%3Dcity what I think of the consensus of some communities.

England population density is 434/km². France population density is 119/km². And in 25% of the departments, it is less than 50/km². See https://fr.wikipedia.org/wiki/Diagonale_du_vide.

Richard,
1. you think I'm ignorant
2. your arguments are inane
I won't argue on these grounds.

Hello Jerry, thank you for your courteous reply.

I also share the opinion that population alone is an insufficient criterion. There are places that are the most important communication, business and cultural hubs around. They often have an international airport, a major railway station, a university, and are therefore known far and wide. They appear in numerous air, rail and road destinations. And this corresponds reasonably well to the short description in the OSM wiki: "place=city: The largest urban settlement or settlements within the territory."

General maps make these places visible at scales comparable to openstreetmap.org zoom levels 6-8.

As you can probably imagine, Britain isn't the only country where old villages have been called "cities" since the Middle Ages. And it's a pretty common and rather childish joke for the locals to pass off their village as a "city" by putting forward arguments in the same half-serious tone as Richard. But the best ones are the shortest.

That the UK community of 10 years ago, when OSM was still very incomplete, stumbled on this slightly eccentric consensus, why not. But OSM is a global map. And today, Western Europe in OSM presents on its north-western flank a mishmash of the Middle Ages (because of the place=city in Britain) and the 21st century (the motorway network, for example). A joke that lasts 10 years isn't funny, it's starting to turn into a shameful stain. The UK community should think again, seriously this time.

This is a violation of osm.wiki/Good_practice#Map_what's_on_the_ground