Roundabout Editing In Waze Cartouche Map Editor
Roundabouts can be fiddly to get right and are one of the more difficult aspects of the Cartouche map editor for new Waze map editors. Getting roundabounts wrong can easily mess up navigation for Wazers. Here's an example showing how to get a roundabout entered correctly with valid road connectivity.
First, working on each of the roads entering the roundabout area in turn, click them, then click Edit Road Geometry and move them so they are clear of where the edges of the roundabout will be. This is because if they are left near the roundabout edges, Waze will try to add junctions for us which might not be where we want them.
Next, switch on GPS Points and Recent GPS Points to view the routes other Waze users have taken when navigating the roundabout. You should be able to see where the centre of the roundabout should be.
Now we want to bring two of the roads together so they just about touch, right where the centre of the roundabout will be. You might want to turn GPS points on and off to be able to click on the roads, and see where the centre of the roundabout should be. Don't worry at this point if the road looks like it's in the wrong place.
Connect those two roads with a junction using Add Junction from the Edit Panel. Tick the box that says Allow All Turns Mode when you do this. Add the junction right where the two roads join, which should be the centre of where the roundabout will be. Check the connectivity of these roads is correct by clicking each of them in turn and making sure the other one is highlighted in green and orange. This means you can navigate FROM and TO the highlighted road.
Next, highlight the new junction by clicking it, then select Turn into a roundabout from the Edit Panel. Grab the little orange blob handle and drag the roundabout until it's the size you can see it should be, the click Create Roundabout. You should now have the roundabout created in Red. (If you get an Waze server error at this stage, it's probably because the two roads weren't connected correctly, or that the new roundabout would overlap some other map feature. Check those and try again.)
The new roundabout will be in two parts because there are two junctions on it so far. Select all segments of the roundabout by clicking the first, then holding down CONTROL and clicking the other segment. Click Edit road details, and change the road type if required, and enter a name for the roundabout, if it has one. Make sure you leave the direction "One way ->".
Now we have the roundabout itself in the right place. Next, I usually, disconnect the incoming roads from their respective junctions on the roundabout, and delete those junctions so we can move them to exactly the right place. Then, edit the geometry of all the incoming other roads so they line up correctly with the GPS points and the aerial view, if you have one available. If the roundabout is large and incoming roads split with an island in between, you can add a junction and then split the small segment of road into two parts using Separate to two one-way roads. You should then "lock" the one-way sections to prevent them being changed back to two-way roads automatically by people with screwy GPS signal or pedestrians going to wrong way. Do this by ticking the "Locked" box on the segment editing panel.
Make sure the connectivity of ALL road segments is correct or navigation won't work properly. This is very important!
Note: Unless you're a Waze Area Manager you'll sometimes come across certain things in the Cartouche map editor that you don't have permission to do, like deleting someone else's roads. If you must delete segments of roads, edit their geometry and move them to one side so they are small and out of the way, and wait for an area manager to approve the removal of those segments.
This process can be quite satisfying to do once you get good at it, and it makes you notice a certain beauty in big junctions like this! :-)