The WME Roundabout Angles script can help in designing normal roundabouts.
It draws angles for typical roundabouts and overlays a round helper line to adjust the geometry of a roundabout.
The script provides guidance based on the rules described in the roundabouts wiki page.
The original authorship of the script is by wlodek76, who decided to leave the Waze community (hopefully, not forever…).
The rights for further maintenance of the script have been granted by the original author to FZ69617.
Activate the script by enabling the “Roundabout Angles” layer in WME
The default is inactive, therefore the script will always be off when you reload WME. It must be activated again each time its needed (after reloading WME).
The script will automatically find all roundabouts visible on the map - pan and / or zoom the map, if it doesn’t find them.
Angles will only be displayed for roundabouts with four or less nodes. The other roundabouts will still display the round helper line in a slightly different color, together with a line to the first three nodes, but no angles will be displayed.
================ Original Post ===============
This extension uses a keyboard shortcut key of Shift+D. This is also the WME default shortcut for highlighting unnamed roads, thus you are no longer able to use the standard keyboard shortcut to show the unnamed roads.
The keyboard shortcuts popup now shows “None” as the shortcut key for unnamed roads. Disabling the extension returns standard keyboard shortcut funtionality.
I have not been able to make this extension work in Chrome (35.0.1916.153) on Mac OS X 10.9.3. Other non-Chrome-Store scripts, such as Junction Node Fixer, are functional. Roundabout Angles will install just fine, in Developer Mode, and shows as enabled, but it is not to be found in the WME layer menu. This persists through clearing of cache and restarting of Chrome. It does work with no problem in Firefox on the same machine. Any thoughts? Has anyone else been able to use this in Chrome on a Mac?
Edit: And thank you for creating this very useful utility!
The feature description says for typical roundabouts. I see it does not work for roundabouts with 5 connected segments. Is that an planned fix, or no intent. I’m only asking to clarify the current limitations so people don’t ask. Maybe add a “known limitations” in the original post to prevent the question.
I imagine since the purpose of the script would be primarily to adjust a roundabout and make it ‘normal’, that it is pointless to add functionality for roundabouts with 5+ nodes.
On the other hand, the off label use of having a circle overlay to help move the roundabout could be useful regardless of how many nodes there are.
Edit: It does show the circle overlay with 5+ nodes, just not all the angles. Which is pretty much useless information anyways AFAIK, being that it has no bearing on anything that I know of. So it’s not much of a limitation per-sé
For roundabouts with 5+ connected segments, I suppose the angles are irrelevant. It’d be nice – and I suppose this is a feature request – if it was able to number the exits from a selected segment as they would be numbered by Waze.
The original authorship of the script is by wlodek76 who has left the Waze.
Fortunately, the author gave me the rights to publish, and maintain results of his work. I’ll try do my best to fulfill this duty.
In case of any problems with a new version please let me know.
New: Added support for roundabouts with 1 or 2 nodes.
Improvement: Simplified roundabout markers starts displaying at zoom level 1.
Improvement: Minimal required zoom level to compute roundabout angles changed to 5 (was 6).
Improvement: Light blue marker circle is now displayed only with roundabouts for which the script can measure angles. The other roundabouts (with more than 4 nodes) are displayed a bit darker.
Indeed, angles don’t matter if there are 5 or more connecting segments, right? I’m not 100% on the criteria for the “nth exit” roundabouts but I think that’s one of them.
Unfortunately, I cannot do that - opening post has been deleted, and any changes to currently opening post can be performed by its author, or forum moderator.
All roundabouts that are not eligible to become normal are being drawn using a dark blue circle that goes through the first three nodes, without any attempt to measure the angles - it helps to find the roundabouts on the map, but has nothing in common with a primary intent of the script.
Thanks for the 4 answers
I did read about the 5 connections but wasn’t aware that it was actually 5 nodes and that a split entry/exit wouldn’t work.
I guess we’d have to invent a mapcat-bowtie-ish roundabout to fix that. (But that wouldn’t work without using the same node or creating an extra segment :D)
Two regular segments connecting to the same roundabout node, is bad for routing. Instead use half a bowtie, with a short extra segment connected to the roundabout.
