Page 3 of 4

Re: Blocking u-turns

Posted: Mon Jan 30, 2012 6:52 pm
by phantomblack
gettingthere wrote: In my opinion, stacked streets for this purpose should be avoided. Too difficult for future editors to identify that the roads are stacked.
As discussed earlier that seems to be everyone's recommendation and why I switched to my failed attempt at bow ties. Problem is almost every intersection on E Washington is U-turn restricted. If I used bow ties on all of them the street would look like spaghetti in the client. If I am going to merge the two lanes at every intersection I might as well merge the entire road to a single two way.

Thing is when I talk to my Wazer co-workers they want to see the two one ways that is what they expect to see as it matches their view of the road. They didn't much care for the bow ties either.

I'll just leave it as it is for now, to be honest I'm curious to see how things turn out :)

Likely scenario, new editor unties the bows and enables all turns on stacked streets.

Re: Blocking u-turns

Posted: Mon Jan 30, 2012 8:03 pm
by phantomblack
jasonh300 wrote: Are these roads really separated widely enough to see the separation on the client? Or does it just look like a slightly fatter line?
Depends on zoom level

Re: Blocking u-turns

Posted: Wed Feb 15, 2012 3:21 pm
by phantomblack
I'm bringing this thread back to life. It would appear a local AM has untied the mapcat bowties that WeeeZer14 and I had updated. I had been checking them for UR's and hadn't seen any new ones untill today and it looks like our changes never made it to the map before they were untied.

So far the location where I used the two staked road option is still in working order and has been running in the client with out creating URs and has flied under the radar to other editors.

I am really starting to think this road should be collapsed to a single two way.

Sure would be nice if Waze created a tool to address this issue.

Re: Blocking u-turns

Posted: Wed Dec 28, 2011 5:58 pm
by RallyChris
There are two kinds of U-Turns... one where there is only one two segment. This cannot be blocked as there is no method for doing so (and maybe no way to save it in the database, depending on how these are documented).

This one is the other kind, where you have two one way segments with a crossover. In it's current configuration you cannot make it denied, as you actually have two different turns, and it would appear that the crossover serves a purpose to get to business on the other side, so you can't restrict either of the turns in itself or you wouldn't be able to route to/from the business.

If the requested u-turn is persistent (not caused by some kind of map issue that the fix hasn't made it through processing yet), then you might use what is called a mapcat bowtie, it's a unique solution that uses several cross over roads to allow the restriction of turns like this. It technically doesn't look correct, but it is functional. Search the forum for topics on this.

Re: Blocking u-turns

Posted: Thu Dec 29, 2011 6:23 pm
by RallyChris
PhantomBlack wrote:To bad we don't have a place to leave editing notes so the next person to come along would know why it is this way. Then this type of work would be a lot less confusing.
Yeah, as overlapping roads like this might cause a map problem report in the future. And I don't know if it would even be obvious to me, that this was on purpose.

Re: Blocking u-turns

Posted: Mon Jan 30, 2012 7:10 pm
by sketch
The best solution would be for Waze to allow for a way to tell the editor whether u-turns are allowed in these intersections.

Re: Blocking u-turns

Posted: Wed Dec 28, 2011 9:31 pm
by WeeeZer14
Also search for "mapcat bowtie" :)

Re: Blocking u-turns

Posted: Fri Dec 30, 2011 2:53 pm
by WeeeZer14
I've been using a triangle like that in many places for a while. I can confirm that it usually works nicely.

The only downside is that the little segments don't often get matched for GPS points when they are small since GPS is so inaccurate. So I have had issues with those short segments getting valid speed data resulting in routes avoiding using the turn for a while even with frequent use by myself and others.

Re: Blocking u-turns

Posted: Mon Jan 30, 2012 4:06 pm
by WeeeZer14
Based on the Waze provided route lines shown for the UR, I'd say the client doesn't have the latest geometry as shown in the editor. What is shown in the editor may not generate a turn right while what is shown in the provided route definitely will.

Re: Blocking u-turns

Posted: Mon Jan 30, 2012 4:44 pm
by WeeeZer14
gettingthere wrote:The Waze provided route on the Update Request (with the prompted turn turn at the intersection vs. no turn instruction) is exactly how the bowtie was set up prior to me editing it several minutes ago.
You know, I actually told myself to check the last modified date, but I didn't :D