why no left turn at intersection

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Re: Routing is wrong

Postby WeeeZer14 » Fri Jul 12, 2013 5:58 pm

AlanOfTheBerg wrote:Aren't there any complaints that Waze will never say "turn left" here?

Not an issue since the left turn here is allowed and the livemap shows that the router is sending people that way instead ;)

That said, if the left turn lane was un-named, it should give a "stay to the left at Rangewood Dr" direction at the start of the left turn lane which may be enough without a follow-on "turn" instruction. Oh, and that left turn lane should be typed as Primary as well.
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Re: Routing is wrong

Postby AlanOfTheBerg » Fri Jul 12, 2013 3:39 pm

Chris_CA wrote:Always seems to route me (and others), north on Austin Bluffs then u-turn at Templeton Gap to go south. Get a report at least once a week (both auto report and user report).

[Deleting this as I thought about it more...]

Livemap doesn't route like this, so it's possibly traffic-related.

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This could be the typical right+u-turn is faster than waiting for the left.... Until someone takes the route a few times, or several people follow the route suggested, Waze will continue to think it's faster. It's all about the math. :)



Aren't there any complaints that Waze will never say "turn left" here?
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Re: Levels and ramps and bad routing oh my!

Postby CBenson » Thu Mar 28, 2013 8:20 pm

So I happened to refresh the tab with the route open and it gave me the U-turn, when it was giving me the simple left earlier.
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Re: Levels and ramps and bad routing oh my!

Postby CBenson » Thu Mar 28, 2013 7:37 pm

I doubt it. There are occasionally reports that changes in things like name or level affect routing and there may be some minor effects. But in general the level should not affect the route.

On the other hand, there have been a large number of reports, many recent, of waze routing straight/U rather than a simple left. I think the issue is that waze knows that there is an average delay to make the left onto the ramp, but as no one passes the ramp to make the u-turn, waze is not accurately guessing how fast the u-turn is.

Waze seems to able to route correctly. So it seems to me to be more likely to be an issue with the speed data than an issue with the levels. However, the levels don't really do much anymore, so I would go ahead and change them and see what happens.
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Levels and ramps and bad routing oh my!

Postby dctdye » Thu Mar 28, 2013 7:24 pm

https://www.waze.com/editor/?zoom=6&lat ... 2,61661253

So the highlighted segments are all set as level -1. I-20/59 is level 1, and Mcfarland is level 0. I'm pretty sure the -1 level is why it told me to go north of the ramp to the little median crossover, turn left and turn left again to get on interstate instead of taking the ramp like any sane person. Before I submit the unlock, I just wanted to confirm that all ramps should be set to level 0 and to see if that should be the routing error.

TIA!
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