There appears to be a problem with road duplication/triplication not solely confined to the Irish Jurisdiction on the International Waze map. It seems to propagate itself in a generic way while editing. It is widespread throughout the whole of Ireland in road and railroad segments. Take for example the Enfield area of County Meath - Dublin-Sligo railroad is triplicated. I have come across many other ghost road segments and spent ages trying to resolve in both editors without much determinable successful methodology that could be passed on here to assist others – “hit & miss” sort of thing.

Sometimes segments cannot be selected at any zoom level below 1000 foot, but can be highlighted by selecting a segment next to it and hitting "Select Entire Street." For what its worth - it is important to keep a sharp look-out during initial editing phase. Keep a look out for things going wrong on road segments with lengths of over approximately 1,500 meters that do not save properly – ie they remain in a deep orange colour. If you get to the problem early it can be edited to a satisfactory conclusion in the new Waze editor Papyrus.

I’m presently compiling a group of Ghost Road Segments for favour of the attention of Waze Support. It has become a real nasty piece of “s#i£” because it can prevent editing updates and is practically impossible to remove without Waze support assistance. From an in-depth perusal of the forum it seems that this type of duplication has been going on for a while internationally and is referred to as “Ghost Road Segments”.

One other way I have employed to overcome and prevent the problem arising in the first instance is not to join a road segment to an existing one when laying down a new road. Start a cm away from the point and join up later after the full road segment is completed. Likewise don’t finish out a road segment by connecting it to an existing road – just bring it a cm away, save and then connect assign name and type and validate connection/s.

For what it is worth – good luck.

Mon 11 Jun 2012 1618 GMT Daylight Time Wk. 24.

Hi David,
My experience is that if an orange colour remains on the road segment or an adjoining road segment after saving, it has been an indicator that a ghost road segment has formed. Did not happen consistently though! At the times it occurred that I became aware of, which one must be alert for, I went back to the affected segment, detached either end of the duplication, then save, fully delete one segment, re-attach the remaining and save. It has worked fairly consistently to a satisfactory conclusion. Haven't seen it arise on short road segments myself - usually 1,500 meter plus distances when laying down new roads from the aerial satellite imagery.

Arthur: your trick for starting new road segments unattached to existing roads and only attaching them when the new road has been saved: are you saying that when you don't do this that ghost road problems arise? I haven't noticed this happening either - I usually start new road segments attached to existing roads.

Whether its a trick or a quirk (lol), I got problems only in respect of lengthy new road segments -again not occurring consistently. Short stretches in housing estates and towns don't seem to pose a problem. As a matter of course I now scout a road first on the aerial image and if its apparent that it is going to be lengthy I never start off laying it down by attaching to an existing road segment - same for finishing, as previously explained. [

One other way I have employed to overcome and prevent the problem arising in the first instance is not to join a road segment to an existing one when laying down a new road. Start a cm away from the point and join up later after the full road segment is completed. Likewise don’t finish out a road segment by connecting it to an existing road – just bring it a cm away, save and then connect assign name and type and validate connection/s.

]

Cheers and safe motoring.

Tue 12 Jun 2012 2345 GMT Daylight Time Wk. 24.

Compliments on Cork Map.

The country is littered with Ghost Road Segments (GRS). In my opinion editor actions do not solely contribute to generation of such ghost segments on roads and railroads. I think it has more to do with a software design flaw. I do believe however that some actions may inadvertently contribute but not definitively, as previously indicated.

One other way I have employed to overcome and prevent the problem arising in the first instance is not to join a road segment to an existing one when laying down a new road. Start a cm away from the point and join up later after the full road segment is completed. Likewise don’t finish out a road segment by connecting it to an existing road – just bring it a cm away, save and then connect all assign name/s and type and validate connection/s.

Sometimes segments cannot be selected at any zoom level below 1000 foot, but can be highlighted by selecting a segment next to it and hitting "Select Entire Street." For what its worth - it is important to keep a sharp look-out during initial editing phase. Keep a look out for things going wrong on road segments with lengths of over approximately 1,500 meters that do not save properly – ie they remain in a deep orange colour. If you get to the problem early it can be edited to a satisfactory conclusion in the new Waze editor Papyrus.

NOTE:

Quick way to request Waze Support GRS issues:-

Go http://world.waze.com/support/ Type ghost in Quick Help box. Read instructions and select "Ask an Agent" by: Email
Complete the presented online feedback form. You can expect a very quick response from Waze Support.

Safe Driving & Beware of the Ghost!

How to include multiple Ghost Road Segments (GRS's) you want unlocked in a permalink request to Waze Support?

Highlight the segment(s) you want unlocked before clicking permalink. To highlight multiple segments, hold the Ctrl key down and click each segment. This will include the relevant segments in the permalink.

NOTE: Quick way to request Waze Support on GRS issues:-

Go http://world.waze.com/support/ Type ghost in Quick Help box. Read instructions and select "Ask an Agent" by: Email
Complete the presented online feedback form. You can expect a very quick response from Waze Support.

Safe Driving.

I've just noticed a similar problem on the N20 between Waterloo and Mallow.
Am I correct when you say "ghost segments" you mean 2 roads laid exactly on top of each other?
I found i added some junctions to the road where it lay within my editable area, but after a recent extension of the editable area northwards, the road i had joined to was "under" the road as it moved northwards.

There was no indication of a problem with the navigation in the app all the way to Mallow, although it is a road with very few of the actual junctions mapped.

Since this is a national problem, would it be appropriate for a mod to change the thread title to "Road duplication" or similar, if no-one had any objections?

Does anyone find that the problem appears and reappears in the space of a few hours?
I just returned to the section i mentioned in my previous post. I had seen on twitter that Waze had refreshed the map tiles, and had some bother logging in, so had wondered if this had affected what i saw at Waterloo area of the map this morning.

When I returned, I couldn't find the second "ghost" road when I pulled the top road aside at Waterloo, but as I worked my way northward, the "ghost" section did appear underneath.

The top road is ID 162618101, was created by 53341, and last edited by me
The bottom "ghost" road is ID 152463162, was created by 53341, and last edited by llayden

(i realise who created/edited is irrelevant to the problem, just using the names to differentiate as it is easier than numbers)

The llayden road is much longer, but then maybe the bprob road was longer before it was shortened by other road junctions being created in it. I assume they were both the same road initially as both created by 53341?

I was able to make edits to the N20 further north just as it enters Mallow, so i assume the "ghost" road disappears at one stage, or the bprob road ends earlier than it. I assume this is how edits to it occur, (when it isn't covered/duplicated?)

Is contacting Support the only solution?

llayden wrote:
The behaviour you describe above is what makes me think that joining segments may be an element in the problem. The ghost segment is often (actually in all the cases I've seen) a bit of a road that has been subsumed into a longer road section - otherwise I think it doesn't get a new segment number. The ghost does not appear immediately (and only shows at some zooms) but when some later process happens some old data gets partially pulled forward. Sometimes i.e. when the road geometry has been changed, it is obvious - two roads nearly on top of each other. However, if the geometry has not changed, they are very difficult to find and only show up when you try to make a junction on the relevent section.

The n20 example overlaps exactly, and is a very long segment, so looks like it was a merge alright. I recently started merging short segments when i saw them in other areas, but found the automatic change in their level is also problematic when it comes to bridges etc. Might stop now altogether if the ghosting problem is caused by it: it might store up too many problems for the future.\

Looks like i will have to contact support about it so.

Roland goes by rolika78 on waze and manages east & north cork/west waterford

arthurohara wrote:In my opinion editor actions do not solely contribute to generation of such ghost segments on roads and railroads. I think it has more to do with a software design flaw. I do believe however that some actions may inadvertently contribute but not definitively, as previously indicated.

Agreed. there is a underlying flaw which we editors all exacerbate from time to time.
I had recently started doing the same thing when adding new long road segments and found it much less hit and miss than joining the road segment from the start.
Occasionally, i forget and do it the old way, to my cost
Interestingly, the other night, i created a ghost by doing just that, but i realised pretty much straight away and was able to delete it myself: i wonder if the ghost isn't noticed straight away, that it becomes bore embedded and harder to delete?

Quick way to request Waze Support GRS issues:-

Thanks! really useful link. it will be seeing a lot of use i fear!

llayden wrote:Two of the roads are not real. Make some minor change and save - two of the roads will save and the other two will tell you that something has been changed since you started editing and won't let you (I unlocked the 'real' road that was locked).

Thanks Leo; it's all sorted now.

David