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#1 2021-08-20 20:10:48

ika-chan!
Member
Registered: 2016-10-23
Posts: 151

Mapping junctions of roads separated only by a crosshatched area

Example of such a junction: https://www.openstreetmap.org/#map=19/36.88475/22.57214

I feel that we should stop splitting a carriageway where there is no physical separation, and only a crosshatched area in the middle.

I say this because of driver safety, and also because of the risk of navigators wrongly disallowing legal left turns into small roads and driveways on such layouts.

Source: https://wiki.openstreetmap.org/wiki/Key:lanes#Examples

Last edited by ika-chan! (2021-08-20 20:11:17)


No one has to be 100% perfect at OpenStreetMap.

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#2 2021-08-22 08:37:27

jimkats
Member
From: Greece
Registered: 2020-06-02
Posts: 55
Website

Re: Mapping junctions of roads separated only by a crosshatched area

Wasn't there a similar discussion?
https://forum.openstreetmap.org/viewtopic.php?id=71438

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#3 2021-08-22 08:39:23

Mateusz Konieczny
Member
Registered: 2013-09-22
Posts: 2,698

Re: Mapping junctions of roads separated only by a crosshatched area

ika-chan! wrote:

I feel that we should stop splitting a carriageway where there is no physical separation, and only a crosshatched area in the middle.

That is a standard OSM mapping in general

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#4 2021-08-22 14:00:50

ika-chan!
Member
Registered: 2016-10-23
Posts: 151

Re: Mapping junctions of roads separated only by a crosshatched area

jimkats wrote:

I think that applied only to dual carriageways with physical separation only.

I am starting this topic because Map-Finder is not respecting the general mapping practice of not splitting a carriageway where there is no physical separation, and only a crosshatched area in the middle. I did not make up the rule: it was the OSM community’s choice over time. This is on top of my concerns about redundant U-turns and tagging exits from roundabouts as a link, which no other country does.

Changesets in question:

https://www.openstreetmap.org/changeset/109857640
https://www.openstreetmap.org/changeset/109855516

Run it through the reverter via JOSM and see what the layout used to be at https://www.openstreetmap.org/#map=19/36.88475/22.57214

I am very busy with other projects so I cannot keep fixing junctions that do not need to be split because there is no physical separation. I feel there needs to be enforcement of this policy, because of driver safety, and also because of the risk of navigators wrongly disallowing legal left turns into small roads and driveways on such layouts.

Roads only need to be split if there is at least a kerb. Markings only are not enough.

Last edited by ika-chan! (2021-08-22 14:12:22)


No one has to be 100% perfect at OpenStreetMap.

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#5 2021-08-23 23:03:14

Map-Finder
Member
Registered: 2018-12-11
Posts: 269

Re: Mapping junctions of roads separated only by a crosshatched area

ika-chan!
this issue was mentioned here!

Map-Finder wrote:

I mean where on the same lane paint splits the road to 2 ways.
For example on crossroads.
example.jpg
The left or the right way is the most correct?

It is a great insult to say that I dont RESPECT!

I know that you love to be hunting me, see here ,
a highway primary that is seperated from main way WITHOUT physical separation but only paint.
1st image on Id Editor, 2nd image with Google, better resolution.
a1.jpg   A2.jpg
But instead of you fixing it, you prefer to be after me.
I also send you a pm, if there would be a fund from OpenStreetMap foundation so that to fix issues on A3 motorway, but you preferred to be silent.
Anyway, I spent too much time & money, to collect data while driving, making gpx files, so I am bored to keep on doing it and have iika-chan! to insult me.
Find an other guy to insult.

Last edited by Map-Finder (2021-08-23 23:36:06)

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#6 2021-08-25 20:47:48

LeonCR
Member
Registered: 2017-10-23
Posts: 20

Re: Mapping junctions of roads separated only by a crosshatched area

I don't know what the consensus may have been in the past
but If I am allowed to have a say,
I am in favor of do splitting a carriageway where there is a crosshatched area in the middle, physical separation or not.

In terms of 'driver safety', I can't find any concerns (on the contrary)
and neither do I see any 'risk of navigators wrongly disallowing legal left turns into small roads and driveways on such layouts' (irrelevant).

Also if it matters anyhow, this I believe is the standard broadly used in mapping and as it is representing accurately the map, it is within the purpose of OSM and should be implemented as such.

But hey, it is just me and my opinion.

PS:
A crosshatched area is not distant to the sense of a physical separation
as long as it does alter the physical dimensions of the trajectory and the landscape .

Last edited by LeonCR (2021-08-25 20:59:05)

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#7 2021-08-27 17:10:24

jimkats
Member
From: Greece
Registered: 2020-06-02
Posts: 55
Website

Re: Mapping junctions of roads separated only by a crosshatched area

I agree with the others. LeonCR described very well why this way of mapping should remain, as discussed in this thread. If this standard changes in the future that's ok, but in the context of this thread, mapping with the crosshatched area in mind should remain as is, wherever possible.

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