From what I understand, a "way is an ordered list of nodes" that can only have two end points (which may or may not overlap).

How should single roads with multiple end points be treated? It's possible for a road to go a certain direction while having offshoots or loops etc. in different directions. It's a "single" road in the sense that all information for these "parts" is the same (street name, surface, speed limit etc.), so it seems like bad practice to duplicate that information.

See this example: the street is incorrectly shown to simply go in and then turn south; in fact, it has that south offshoot, but it continues further in and splits again to two parts. But in every sense, this is a single road: it has the same name, and all addresses along its different parts are on a common numbering system.

asked 27 Jul '18, 11:11

Stylianus's gravatar image

Stylianus
11112
accept rate: 0%


Please note that a real world street does not correspond to a single OSM way. What you describe is represented by multiple OSM ways, all with the same name.

The opposite is also possible, a simple street represented by multiple OSM ways, because e.g. the road surface is different, the maximum speed changes, etc.

permanent link

answered 27 Jul '18, 12:30

escada's gravatar image

escada
17.8k16153283
accept rate: 21%

So to confirm, the name/information would need to be duplicated across the different ways and there is no link between them (i.e., a name or tag change on part of that road will not affect the other parts, which need to be updated independently)?

(27 Jul '18, 12:44) Stylianus

@Stylianus: yes, that is the usual method. In addition you can group the street parts with e.g. https://wiki.openstreetmap.org/wiki/Relation:associatedStreet , but this is rather uncommon.

(27 Jul '18, 14:32) aseerel4c26 ♦

Just to be clear, the associatedStreet relation mentioned by aseerel4c26 is intended for the purpose of assigning addresses to objects, not as a tidy way of collecting separate ways that compose a single road.

(27 Jul '18, 16:54) alester

@alester thanks, yes, it is rather a side-effect that you collect all parts of one street.

(27 Jul '18, 19:52) aseerel4c26 ♦
Your answer
toggle preview

Follow this question

By Email:

Once you sign in you will be able to subscribe for any updates here

By RSS:

Answers

Answers and Comments

Markdown Basics

  • *italic* or _italic_
  • **bold** or __bold__
  • link:[text](http://url.com/ "title")
  • image?![alt text](/path/img.jpg "title")
  • numbered list: 1. Foo 2. Bar
  • to add a line break simply add two spaces to where you would like the new line to be.
  • basic HTML tags are also supported

Question tags:

×139
×29

question asked: 27 Jul '18, 11:11

question was seen: 358 times

last updated: 27 Jul '18, 19:52

powered by OSQA