how to edit two ways roads junctions?

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Re: how to edit two ways roads junctions?

Postby slandrum » Tue Feb 04, 2014 5:52 pm

No, it's 15m in the US (and presumably Canada, since it's on the same server) as well. I've had to widen intersection segments to just over 15m to allow U-turns, and shortened some to just under 15m to prevent U-turns, and the changes worked as desired.
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Re: how to edit two ways roads junctions?

Postby davipt » Tue Feb 04, 2014 9:46 pm

zadigre wrote:Google Maps is far from perfect... but usually, it very good in North America (at least where I've used in Canada and the USA).


Yeah but USA is not the world :P Let's say we have a street that translates literally as "Street of the flowers". It doesn't even matter where the "of" or "the" comes from, it's the name everybody uses, and the name on a plaque on the corner of the street. But no, Google decided those little things are worthless and called it "Street Flowers". Hence the 99.9% of the streets are wrong over here. On the other hand, before Google bought waze, it was quite easy to identify editors copying street names from Google. Oh and the aerials are completely out of place, randomly, whilst the previous ones were perfect. </rant>
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Re: how to edit two ways roads junctions?

Postby davipt » Tue Feb 04, 2014 3:41 pm

Google maps are never a good example... I correct, Google maps is the worst example ever here in Portugal. All road names are wrong, and it can't take me from home to office through a well known and heavily used ramp, albeit I've reported the issue a million times since 2011 when I came back to my home country. </rant>
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Re: how to edit two ways roads junctions?

Postby davipt » Tue Feb 04, 2014 3:10 pm

No ;) if the connections are less than 15m, really question if the split segments shouldn't be joined. But as a last resort, to change as little as possible, as you stated, yes try that.
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Re: how to edit two ways roads junctions?

Postby davipt » Tue Feb 04, 2014 2:46 pm

15m on ROW seems to be the limit. I've just fixed a split road with three u-turn connections and waze sent me to the third one because the first two were 14m and the third 16. :D
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Re: how to edit two ways roads junctions?

Postby AndyPoms » Tue Feb 04, 2014 5:45 pm

Wow, that area is a mess... Most of the roads that are typed as "Street" shouldn't be split in that area.

If you follow Boul du Séminaire Nord south from that intersection, you'll see several different styles of junctions. All of which can be greatly simplified by unsplitting the side streets (but this isn't something a level 1 should tackle with out assistance, as the work has to be done in a particular method to preserve some underlying data.

Canada is on the NA Infrastructure (along with the US), and I think that the connections have to be less than 10m to prevent a U-Turn, but I'm not sure...
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Re: how to edit two ways roads junctions?

Postby AndyPoms » Tue Feb 04, 2014 1:11 pm

Well, first off, please ensure both roads meet the Criteria for being split.

Then, look at the Junction Style Guide.

Also, the short segments in the middle of the intersection should be unnamed ("No Street" checked) & less than 15m (10m in some places). Those two items should prevent the U-Turn automatically.
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Re: how to edit two ways roads junctions?

Postby AlanOfTheBerg » Tue Feb 04, 2014 7:14 pm

zadigre wrote:this is simple and clear... but it does not cover the situation when two dual carriageway roads intersect.

That is true. I think we expect people to extrapolate, or think things like "this could apply to my situation, too" kind of stuff. Maybe the page could be updated with some more examples.
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Re: how to edit two ways roads junctions?

Postby AlanOfTheBerg » Tue Feb 04, 2014 7:06 pm

zadigre wrote:Waze should add a section for this type of junctions in the wiki...
it would be quite easier if we had a clear picture of what should and shouldn't be done in those situations.

https://www.waze.com/wiki/Junction_Style_Guide#Bow_tie_intersections
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Re: how to edit two ways roads junctions?

Postby AlanOfTheBerg » Tue Feb 04, 2014 6:47 pm

zadigre wrote:
AlanOfTheBerg wrote:My gut reaction is to say that a bowtie may be a good way to deal with this.


you mean linking the segments from the side streets right in the middle or farther point of the main split street?

Yeah, all segments meet at a single junction. Not everyone likes them, but they do work very well.
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