[Page Update] How Waze determines turn/keep/exit maneuvers

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Re: [Page Update] How Waze determines turn/keep/exit maneuve

Postby sketch » Sun Jun 08, 2014 7:21 pm

PesachZ wrote:Provide a link to this page "for a more detailed, corrected version".

Extremely cool. Can't wait to see it when all the images have been added.
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Re: [Page Update] How Waze determines turn/keep/exit maneuve

Postby sketch » Mon Jun 09, 2014 4:05 pm

The Wiki must be current and accurate. It doesn't matter if staff posted the original page, if the original page is wrong and we're right, change it.

It's very easy to find old revisions of a page. Just go to a page, click "History", click "oldest", and click whichever revision you like. You can even compare them with the "cur"rent page.
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Re: [Page Update] How Waze determines turn/keep/exit maneuve

Postby sketch » Mon Jun 09, 2014 5:50 pm

CBenson wrote:
sketch wrote:The Wiki must be current and accurate. It doesn't matter if staff posted the original page, if the original page is wrong and we're right, change it.

If only right/wrong was actually binary.

Uh, it is when the information on a page purports to explain the mechanics of a particular apparatus, as this one does.

sketch wrote:It's very easy to find old revisions of a page. Just go to a page, click "History", click "oldest", and click whichever revision you like. You can even compare them with the "cur"rent page.

But over time the information tends to migrate from page to page, so the history of a particular page ceases to be enough to find the original waze statement.

It can be done. It doesn't need to be dead simple. If there's a compelling enough need to find old info, someone who knows the Wiki well will be able to track it down. (I had no trouble finding the old "How to Label and Name Roads" article.)
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Re: [Page Update] How Waze determines turn/keep/exit maneuve

Postby sketch » Tue Jun 10, 2014 7:00 pm

CBenson wrote:"Are s-in or s-out part of a roundabout?"
This makes it sound like you get an instruction at the entrance to the roundabount, at the exit from the roundabout, and at every junction from roundabout segment to roundabout segment when rounding the roundabout.

Right, perhaps try "Do s-in and s-out connect via a roundabout?" or "...meet at a roundabout?"
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Re: [Page Update] How Waze determines turn/keep/exit maneuve

Postby sketch » Tue Jun 10, 2014 7:23 pm

I think your 'no' and 'yes' got switched on "Is s-out part of a Roundabout?"
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Re: [Page Update] How Waze determines turn/keep/exit maneuve

Postby sketch » Tue Jun 10, 2014 9:21 pm

PesachZ wrote:
sketch wrote:I think your 'no' and 'yes' got switched on "Is s-out part of a Roundabout?"

Thanks for looking and providing feedback.

My thought process:
To prevent the chart showing an instruction going into or around a roundabout:
Going into a roundabout or from roundabout segment to another, the s-out will be part of the RA.
Code: Select all
Is s-out part of a Roundabout?
Yes = No instruction
No = Next question (determine if we are dealing with a RA or a regular segment)

Is s-in part of a Roundabout?
Yes = We now know this is a junction between a RA segment and a regular segment --> RA flow
No = We know this junction has nothing to do with a RA --> regular flow

If this doesn't make sense it could be due to being up 30 hours so far. Please let me know if it still doesn't flow right.

OK. I understand what you're trying to do. I'm not sure I agree with it completely. First of all, the instruction is given when you enter the roundabout, not when you exit, so according to your methodology the instruction is given when s-out is part of a roundabout and s-in isn't.

But beyond that, I don't think roundabout segments should be considered 'segments' in this analysis; instead, it makes a lot more sense (to me at least) to consider the roundabout itself a "junction". In fact, it seems some of your other questions ("From s-in, is it a normal roundabout?", "What direction is s-out?") follow this approach.

So, instead of "Is s-out part of a Roundabout?" and "Is s-in part of a Roundabout?", I would have a single circle asking "Do s-out and s-in meet at a Roundabout?" with YES pointing to "Does the roundabout have 5+ exits?" and NO continuing to "Is the angle <45°?"

(The question that remains is, what happens if you have a roundabout with only two segments connected to it? If you get an instruction, then the very first question would have to be "Do the segments meet at a junction or at a roundabout?", with "roundabout" going to "Does the roundabout have 5+ exits?" and "junction" going to "Are there any s1,s2,s3,...". That may make more sense anyway.)
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Re: [Page Update] How Waze determines turn/keep/exit maneuve

Postby sketch » Tue Jun 10, 2014 10:51 pm

qwaletee wrote:Pesach,

I think you have YES and NO reversed for the roundabouts. If it is YES a normal roundabout, you get take the Nth exit, if it is NO (abnormal), you will get a regular left/right/continue instruction.

No. A "normal roundabout" is one that says "turn right" "turn left" "continue straight". That's the Waze terminology. https://wiki.waze.com/wiki/Roundabout#U ... structions

Not saying I agree with the terminology – I think this'd be better known as a "simple roundabout".
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Re: [Page Update] How Waze determines turn/keep/exit maneuve

Postby sketch » Wed Jun 11, 2014 9:42 pm

Just leave the old version in the history where it belongs. There's no need to link to it. If it's wrong, it's wrong.
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Re: [Page Update] How Waze determines turn/keep/exit maneuve

Postby sketch » Sun Jun 22, 2014 2:29 am

PesachZ wrote:The associated guidance for usage belongs in the table in the JSG, where the recommended angles should be something like <40° keep, 40°-50° don't use, 50°-130° turn, >130° only for restricted turns. I can link to that at the top once it is updated.

Sent using Tapatalk for Android 4.4.2

You said exactly what I wanted to. Indeed, in the JSG I would like to recommend 10-20° angles for interchange ramps and 60°+ for "turn" instructions.
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Re: [Page Update] How Waze determines turn/keep/exit maneuve

Postby sketch » Tue Aug 05, 2014 5:37 pm

PesachZ wrote:I added a note to the page that no-name agreements are treated as a unique name, and not as the name they inherit.

Excellent. That is very good information.
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