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Post by PesachZ
kentsmith9 wrote:
PesachZ wrote:
kentsmith9 wrote:From this thread we concluded we needed a Routing penalties page.

There is one image I am proposing we add for the 15 m U-turn prevention, but I am not sure what other images would be good. I am currently editing the page for Wikilinks. From here we can discuss any other changes we think are needed.
Due to some recent experiences in NYC, I'm not sure the 15m left, left penalty still functions. We had a row of blocks with H intersections, the middle segment being 14m, then all-of-a-sudden got URs at a few different one showing Waze routed U turns through them (left left). We had to replace them with bow-ties to solve the issue.
Remember that the page is talking about how routing works with penalties. The Left-Left-Turn is simply penalized over other routes. If the other routes are too long in time, then the 14m or less distance penalty is better than some other route.

I believe we don't know the penalty amounts for the different factors beyond a few of them. I am saying that a bow-tie intersection will enable you to set a no-left turn to the other direction which is just another penalty. Hopefully that bow-tie's left turn restriction (red) has a higher penalty than a 14m segment length. If true then your problem should be solved.
We haven't had any new URs after making the bow ties. The legal route is to go around one block and it was being bypassed for a left left on a 14m segment. This only started happening recently, so I'm thinking maybe that penalty has recently changed.
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Post by PesachZ
berestovskyy wrote:Hi!
In Road configuration section:
Waze will penalize a route with two left turns in less than 15 m
Please have a look at this thread: viewtopic.php?f=8&t=73575#p645880

Basically, Waze penalize two left turn only if both of those turns are very close to 90 degree. IMO the spread is +- 5 degree or even less.
The roads allowing the two left turns were all at exactly 90° +/- 1° using junction angle and the middle segment was 14 meters.

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Post by PesachZ
berestovskyy wrote:
PesachZ wrote:The roads allowing the two left turns were all at exactly 90° +/- 1° using junction angle and the middle segment was 14 meters.
They are now 90+-1 and U-turn is not allowed, but when they were ~85 degree the U-turn was allowed. here are the links from the OP:
https://www.waze.com/en/livemap?zoom=17 ... n=20.97914
https://www.waze.com/editor/?zoom=7&lat ... 38&env=row

Anyway, the Wiki phrase "Waze will penalize a route with two left turns in less than 15 m" is not quite correct, since Waze will not penalize ANY left turns, but just turns which are very close to 90 degree.
I meant the intersection I was referring to originally, in Brooklyn NY USA Atlantic ave and Logan st when I gave the measurements. Sorry if I wasn't clear about that.

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Post by PesachZ
kentsmith9 wrote:Just a few days ago I had to point someone to this new page because they could not figure out why Waze would not do a Left-Left turn and instead did it on the next block. First turn was 14m and the second one was 17m. That would say it is working.

You may have seen a routing anomaly for a few days.
I just fixed this UR for a left-left u-turn over a 10m segment. I made a bow-tie before thinking to preserve it for you to see. I then reverted it back to exactly how it was, confirmed by the navigation tacks so you can take a look.

The turn angles are 80, and 94. Was it ever confirmed that turn angles have to be 90 +/- 5 to work for this penalty? We can test here if not.
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Post by PesachZ
PesachZ wrote:
kentsmith9 wrote:Just a few days ago I had to point someone to this new page because they could not figure out why Waze would not do a Left-Left turn and instead did it on the next block. First turn was 14m and the second one was 17m. That would say it is working.

You may have seen a routing anomaly for a few days.
I just fixed this UR for a left-left u-turn over a 10m segment. I made a bow-tie before thinking to preserve it for you to see. I then reverted it back to exactly how it was, confirmed by the navigation tacks so you can take a look.

The turn angles are 80, and 94. Was it ever confirmed that turn angles have to be 90 +/- 5 to work for this penalty? We can test here if not.
After finally getting a tile update, I can confirm that with these angles (80 & 94) the 10m segment IS used for a u-turn. I will now adjust the angles and leave everything else as is, to test after the next update.

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Post by PesachZ
PesachZ wrote:
PesachZ wrote:
kentsmith9 wrote:Just a few days ago I had to point someone to this new page because they could not figure out why Waze would not do a Left-Left turn and instead did it on the next block. First turn was 14m and the second one was 17m. That would say it is working.

You may have seen a routing anomaly for a few days.
I just fixed this UR for a left-left u-turn over a 10m segment. I made a bow-tie before thinking to preserve it for you to see. I then reverted it back to exactly how it was, confirmed by the navigation tacks so you can take a look.

The turn angles are 80, and 94. Was it ever confirmed that turn angles have to be 90 +/- 5 to work for this penalty? We can test here if not.
After finally getting a tile update, I can confirm that with these angles (80 & 94) the 10m segment IS used for a u-turn. I will now adjust the angles and leave everything else as is, to test after the next update.

I tested again today with new tiles, and 90° turn angle at both junctions. The 10m segment was not used for the u-turn. The route turned around a square block instead.
http://img.tapatalk.com/d/14/05/15/5yqabe9u.jpg
http://img.tapatalk.com/d/14/05/15/pyhu7u4e.jpg

I will continue testing moving the angles away 1° at a time to find the threshold.

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