Un-dividing divided roads

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Un-dividing divided roads

Postby Borgholio » Fri May 10, 2013 2:16 pm

Now that single roads have the option for a U-Turn at junctions, would it make sense in some cases to un-divide roads, at least at intersections? The goal is to eliminate erroneous "roads are too far apart" problems caused by U-turns too far away from the street junction.
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Re: Un-dividing divided roads

Postby AlanOfTheBerg » Wed Jun 26, 2013 7:25 pm

An editor who came and saw two divided roads meeting each other in which a previous editor added every single right and left turn lane might have made a good call to dramatically simplify, IMO.
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Re: Un-dividing divided roads

Postby bgodette » Wed Jun 26, 2013 5:51 pm

gohamstergo wrote:
jasonh300 wrote:Unsplitting is likely to generate even more Missing Road type MPs. There's no need to do anything about those unless an actual road is missing.

Semi-dated thread, but I finally found an intersection somebody made that is a perfect example of what I was talking about.
https://www.waze.com/editor/?zoom=6&lat ... s=55569961

With an intersection like this, ALL turns are controlled, without having to use "short segment" tricks, etc. I kind of like it, but....
Just a comment about something I see near by: Pretend the segment type of Service Road doesn't exist. It's identical to Street, so if you're trying to have routing avoid it, use Parking Lot or Private, and if it's a "frontage" it likely should be Primary or Street depending on Functional Class.
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Re: Un-dividing divided roads

Postby gohamstergo » Wed Jun 26, 2013 5:32 pm

Guess I'll just use these when specific u-turn control is needed, since that seems to be their only use.
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Re: Un-dividing divided roads

Postby jasonh300 » Wed Jun 26, 2013 3:07 pm

I also might add that in that example, the only reason for putting in a bowtie is to prevent U-Turns. However, there's not a single restricted turn on that Bowtie.

I would think that the road coming from the south should not be allowed to make a U-turn...possibly from other directions also. What happened here is that a level (1) came in and split the road from the south...probably not necessary...set it up as a Minor Highway, and didn't restrict the U-turn.
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Re: Un-dividing divided roads

Postby jasonh300 » Wed Jun 26, 2013 3:03 pm

gohamstergo wrote:which road you talking about? how pacific blvd is different? all i did was wipe some extra geometry in the area, so dont blame me X_X if you see somethin needs fixin, feel free.


I don't think it was your name on it, however one side of the road was marked as a Minor Highway, and the other side was marked as a street...blatantly wrong, especially considering that it appears to be the entrance to a parking lot. Looks like russblau already came in and fixed that.
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Re: Un-dividing divided roads

Postby russblau » Wed Jun 26, 2013 11:27 am

gohamstergo wrote:Semi-dated thread, but I finally found an intersection somebody made that is a perfect example of what I was talking about.
https://www.waze.com/editor/?zoom=6&lat ... s=55569961

With an intersection like this, ALL turns are controlled, without having to use "short segment" tricks, etc. I kind of like it, but....

It's called a "bowtie", or a "Mapcat bowtie" after the user who originated it. Look at the Junction Style Guide page in the wiki for more info.
Last edited by AlanOfTheBerg on Wed Jun 26, 2013 7:22 pm, edited 1 time in total.
Reason: removed beta editor link
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Re: Un-dividing divided roads

Postby gohamstergo » Wed Jun 26, 2013 7:00 am

which road you talking about? how pacific blvd is different? all i did was wipe some extra geometry in the area, so dont blame me X_X if you see somethin needs fixin, feel free.
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Re: Un-dividing divided roads

Postby jasonh300 » Wed Jun 26, 2013 3:04 am

gohamstergo wrote:
jasonh300 wrote:Unsplitting is likely to generate even more Missing Road type MPs. There's no need to do anything about those unless an actual road is missing.

Semi-dated thread, but I finally found an intersection somebody made that is a perfect example of what I was talking about.
https://www.waze.com/editor/?zoom=6&lat ... s=55569961

With an intersection like this, ALL turns are controlled, without having to use "short segment" tricks, etc. I kind of like it, but....


Looks like a perfect example of an intersection that will generate a lot of MPs that really don't need any attention other than to mark solved.

Someone with a little bit of editing experience should go in and clean up after the level 3 who unsuccessfully tried to change the road type of the road to the south.



Via my iPhone 4S
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Re: Un-dividing divided roads

Postby gohamstergo » Wed Jun 26, 2013 2:57 am

jasonh300 wrote:Unsplitting is likely to generate even more Missing Road type MPs. There's no need to do anything about those unless an actual road is missing.

Semi-dated thread, but I finally found an intersection somebody made that is a perfect example of what I was talking about.
https://www.waze.com/editor/?zoom=6&lat ... s=55569961

With an intersection like this, ALL turns are controlled, without having to use "short segment" tricks, etc. I kind of like it, but....
Last edited by gohamstergo on Thu Jun 27, 2013 2:30 am, edited 1 time in total.
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