why no left turn at intersection

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Re: why no left turn at intersection

Postby bz2012 » Sat Mar 30, 2013 12:01 pm

CBenson wrote:Yes, I agree that in you example waze is avoiding the minor highway. But if you are turning onto Baltimore Annapolis Blvd. you have to make the major/minor transition somewhere so I don't see why that would favor the straight/U.


Perhaps WAZE haz gone CRAZy.
It seems to be WRONGLY routing people. I suspect that many don't bother to report, they just go to a different GPS system.

By the way, the original topic of this discussion was 'fixed' by making that U-turn a 'parking lot road'.
It now routes correctly
2013-03-30_070634.png
2013-03-30_070634.png (14.51 KiB) Viewed 2265 times
via a left turn rather than the right, left, left. :)
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Re: why no left turn at intersection

Postby bz2012 » Sat Mar 30, 2013 11:56 pm


That one IS strange. Livemap correctly navigates through the intersection NOW and color highlighter indicates no recent changes in that area.

Perhaps WAZE has been working on the routing problems!
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Re: why no left turn at intersection

Postby bz2012 » Fri Nov 01, 2013 12:02 pm

CBenson wrote:It seems that way! I wish there was a better explanation.


Perhaps the routing server has developed sentience and is "just messin' with us".
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Re: why no left turn at intersection

Postby bz2012 » Sat Dec 14, 2013 3:22 pm

It amazes me that WAZE is still having these kinds of routing problems, 9 months after this topic was started!

It seriously undermines the trust drivers put in the app.

Someone needs to take a long and serious look at the routing programs and fix this bug.
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Re: why no left turn at intersection

Postby bz2012 » Thu Dec 19, 2013 12:20 pm

Here is a slightly different kind of apparent "routing problem" that would take the user an extra 95.3 miles and 46 minutes (those figures are from livemap routing laramie,wy to lovell, wy vs laramie to casper to lovell. The two step route is much shorter and faster. I admit that I have not checked every segment and node along the 404.66 mile route to make sure that there are no bad settings.)

https://www.waze.com/editor/?zoom=5&lat ... TTTTTTTTTT

ccdmas wrote:....
It would be a *really* nice move if there'd be some official staement from Waze staff here.
....
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Re: why no left turn at intersection

Postby bz2012 » Sat Jan 11, 2014 11:42 am

CBenson wrote:Waze staff has stated that they are addressing the circumstance when historic data creates unreasonable routes to cut time. It is acknowledged that many times, Waze prefers to continue straight, make a u-turn and turn right instead of just turning left in the junction just to save a few seconds. Very often this is perceived as a mistake and not as a time saving.

Waze is testing changes to the routing that will prevent such detours if there is under a 30 sec difference between the routes.

Thanks for taking the time to contact them about the problem.
Here is 'yet another example' of erroneous routing through a U turn rather than simply making a left turn.'
Imagehttps://www.waze.com/editor/?zoom=5&lat=30.44363&lon=-91.09093&env=usa&layers=TBFTFFTTTTFTTFTTTTTTTTTTTTTT
The 'faster' explanation often given makes no sense from the data we have available. Segment speeds for the avoided segment 15 m @ 36 kph vs the speeds for the 'recommended segments'
East Bound 33 m @ 22 kph, North Bound 10 m @ 32 kph, West Bound 31 m @ 3 kph. Clearly, the 'avoided path' should have been 'faster', based on total average segment travel times.

Perhaps the 'hidden data' on "wait time" would make it clear. It would be nice if the map editor displayed the wait time at the nodes involved at the time the UR was submitted.
Perhaps the User App could capture that information and pass it along so that it could be displayed along with the Problem Report.
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Re: why no left turn at intersection

Postby bz2012 » Thu Jan 16, 2014 5:32 pm

And this one could also be a jolly driver post
Image
WAZE wouldn't let him turn left despite the fact that the turns were enabled. I think he meant 'no J turn needed!' because Louisiana has been putting J turns in many places.
http://www.dotd.la.gov/administration/public_info/projects/j-turn/home.aspx

WAZE seems to have implement its own version of the 'J' turn.

I call it the 'Y' turns because it makes the drivers wonder 'Y'! :)
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Re: why no left turn at intersection

Postby bz2012 » Fri Jan 31, 2014 6:01 am

scerruti wrote:
detour.png

permalink

I started a different thread on this, but after stewing about it I think this may be the same problem; needlessly avoiding left turns.

This is a drive I do two to three times daily. This was at a low traffic time with no visible alerts. Instead of a left at the light, Waze made several valiant different attempts to route me around this intersection. This was the simplest of the bad options consisting of a right, left at a stop sign and then straight on back through the same intersection.


It took me a while to find the area in question, so here is a better permalink:https://www.waze.com/editor/?lon=-117.35224&lat=33.19571&zoom=5&layers=900&env=usa

If anyone is interested in testing the routing.
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Re: why no left turn at intersection

Postby bz2012 » Fri Jan 31, 2014 11:33 am

Here is some REALLY goofy routing:
Even though WAZE shows the driver west bound on I10 along this segment,
https://www.waze.com/editor/?zoom=5&lat=29.82985&lon=-94.40429&env=usa&layers=900&segments=49036474
it is routing him to take this path
https://www.waze.com/editor/?zoom=5&lat=29.82985&lon=-94.40429&env=usa&layers=900&segments=49037383,49040352,49040608,49040378

If a human being were doing this, I would be asking 'what COULD they have been thinking????'

Here is another, nearby case, just a bit to the west, where WAZE clearly thinks the driver is on the access road despite GPS data showing the driver moving along a line that is clearly to the south of I-10.https://www.waze.com/editor/?zoom=4&lat=29.82747&lon=-94.44599&env=usa&layers=900
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Re: why no left turn at intersection

Postby bz2012 » Fri Jan 31, 2014 11:44 am

They certainly warrant an extra look by the people that program the routing server!!!!
Perhaps the 'Goofy routing' thread is a good one for these cases.
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