Detour detection mechanism in the wiki

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

You can "move" the page. Tab at the top.
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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 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 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 kentsmith9 » Wed Jan 08, 2014 3:01 am

CBenson wrote: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.

It sounds good if we have any indication they will actually be getting to this as some point.
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Re: Detour detection mechanism in the wiki

Postby sketch » Thu Feb 20, 2014 7:49 pm

I've noticed that the detour mechanism affects a particular construction that's used in a few places around here. I'm not sure where this would best go in the Wiki, or if this configuration is used elsewhere, but I do think it should be here to guide editors.

Any time a U turn segment splits off from a left turn lane, U turns are prohibited by detour prevention — because 2 segments are required to make the U turn, it's treated as a detour.

This configuration does not work:
Image

The configuration on the left works, the configuration on the right does not:
Image

This configuration works:
Image
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Re: Detour detection mechanism in the wiki

Postby CBenson » Thu Feb 20, 2014 7:59 pm

Seems to me that it would be appropriate to note this on the detours page in a "Notes" or "Side-effects" section. I've added this to the detour page, but consider it a draft that can be freely edited. Is there any reason not to put this on the detour page?
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Re: Detour detection mechanism in the wiki

Postby sketch » Fri Feb 21, 2014 12:06 am

That looks good to me.
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