Detour detection mechanism in the wiki

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Re: Detour detection mechanism in the wiki

Postby CBenson » Tue Jan 07, 2014 11:08 pm

Hmm, maybe just say detour prevention mechanism. Then have sections for both "big" detours and "small" detours. Can we say the following at this point?
Waze plans to implement a small detour prevention mechanism to deal with instances where waze calculates that that its a few seconds faster to to continue straight or make a right at an intersection a make a u-turn rather than just turning left. Waze will eliminate such detours if there is under a 30 sec difference in the routes.
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Re: Detour detection mechanism in the wiki

Postby CBenson » Tue Jan 07, 2014 5:56 pm

Thanks.

Any input on what we should call it at this point?

Highway Off/On Detour Prevention Mechanism?
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Re: Detour detection mechanism in the wiki

Postby CBenson » Tue Jan 07, 2014 3:15 pm

AlanOfTheBerg wrote:
CBenson wrote:Small Detour Prevention Mechanism

Why the "small" here? To try and differentiate it from "large" detours which are as yet undefined in terms of Waze? I think I'm ok with it, but want a small explanation here. (pun intended)


Very prescient. Waze seems to have now taken to calling this Big Detour Prevention and calling the right/U routing issues small detours.

So how can the title of this section be changed to avoid future confusion.
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Re: Detour detection mechanism in the wiki

Postby CBenson » Wed Nov 27, 2013 11:50 am

Yes, I think we should. At this point I believe that reliance on the detour prevention mechanism is preferable to using the collector/distributor configurations currently listed in that section of the wiki.

I also think that we now need to state somewhere that when editing interchanges care should be taken to avoid changes in the highway/freeway name and city name through the interchange to preserve the effectiveness of the detour prevention mechanism. The question becomes whether freeway segments should have city names at all, but I don't believe there is a consensus on this issue.

The Europeans seem to be finding significant instances where the detour prevention mechanism does not work as expected. I have been holding off making more significant changes based on some hope that we will get more information from waze regarding exactly how the mechanism works.
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Re: Detour detection mechanism in the wiki

Postby CBenson » Mon Nov 18, 2013 9:46 pm

What's soon? I've added the page.
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Re: Detour detection mechanism in the wiki

Postby CBenson » Mon Nov 11, 2013 4:04 pm

Is there any objection to adding my language as a page under the Technical Information section of the wiki?
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Re: Detour detection mechanism in the wiki

Postby CBenson » Mon Nov 04, 2013 10:04 pm

I don't remember why I stuck "small" on there (I proposed essentially this wording in a US Champs thread). You're certainly correct that there isn't another "large" detour prevention mechanism, so the "small" is not necessary.
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Re: Detour detection mechanism in the wiki

Postby CBenson » Mon Nov 04, 2013 9:50 pm

I agree that it should. I would propose the following:

Small Detour Prevention Mechanism

Waze routing includes a mechanism to prevent routing off a highway/freeway only to be routed right back on the same highway/freeway. The assumption is that drivers will prefer to remain on the highway/freeway even if waze calculates that taking a series of ramps or other collector/distributor roads is slightly faster or shorter.

Waze routing will not present routes over a detour off a highway/freeway and back on that same highway/freeway when each of the following conditions are met:
1) the last segment on the highway/freeway before the detour has the same street name and same city name as the next highway/freeway segment after the detour,
2) the detour is more than one segment long,
3) the detour is over segments of a different road type than the highway/freeway, and
4) the detour is under the threshold length as defined below.

The threshold length if the highway/freeway is a freeway or a major highway is 5 kilometers. The threshold length if the highway is a minor highway is 500 meters.


The issue I have with the other quote is that it does not mention city names, which we know must be the same as well. To waze insiders this may go without saying, but in the wiki I think it needs to be said.

Where should it be added? There is the discussion on collector distributor mapping here: https://www.waze.com/wiki/Limited_Acces ... utor_Lanes
Although the detour prevention mechanism discussion may unduly complicate that section.

There is also the technical information section here: https://www.waze.com/wiki/Technical_Information
But I'm not sure if that is really meant for community editing or not.
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Re: Detour detection mechanism in the wiki

Postby AlanOfTheBerg » Tue Jan 07, 2014 10:59 pm

CBenson wrote:Any input on what we should call it at this point?

Does Waze's official "name" make enough sense to the genpop?
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Re: Detour detection mechanism in the wiki

Postby AlanOfTheBerg » Tue Jan 07, 2014 5:41 pm

You can "move" the page. Tab at the top.
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