hatzfeld
commented
6 years ago I have observed the same problem. My system: OsmAnd+ 2.9.3 on Samsung Galaxy A3 (2017), Android 7.0, using OsmAn Offline Maps and Offline Routing with OsmAnd live, car profile, fastest route.
This is just one of the objects where this happens: http://www.openstreetmap.org/way/265987206/history#map=16/50.8812/7.1917
As you can see in the history, the number of lanes has never been different from 3 (at least since 2014). Nevertheless the screenshot shows 6 lanes:
The most annoying effect (for me) is that the voice navigation tells me to keep left (resp. right) when the routes switches between 3 yellow arrows on the left to 3 yellow arrows on the right.
scaidermern
Maybe this way? 
Must be around this way: 
PaulStets
vshcherb
InsertUser
julianladisch
aceman444
What version of OsmAnd are you using, on what device and Android/iOS version?
OsmAnd nightly 2.9.0 #23745m dated 2018-02-04, Android 4.2.1, on Samsung Galaxy S4 (but can also produce on Android 7.0 on Samsung Galaxy S7).
Do you use the offline maps offered within the OsmAnd app for download, or online (tile / raster) maps?
OsmAnd offline maps.
If you have an issue related to offline maps, tell us the exact name of the map file where the issue occurs, and its edition date.
US Georgia map dated December 31, 2017, with OsmAnd Live enabled, and OsmAnd Live navigation integration enabled.
In case of wrong routing:
Tell us whether you have used OsmAnd's in-app offline routing, or any online routing provider like YOURS, OpenRouteService or OSRM.
OsmAnd's in-app offline routing
What routing profile is chosen in OsmAnd app? (car, bike, pedestrian, fastest or shortest)
Car profile, fastest.
Please specify as exactly as possible the start and end point of your route by telling us city name and street name so that we can find it via in-app address search easily. Also, a permalink from openstreetmap.org can be helpful.
On January 30 or 31 (can't remember, but early enough to be picked up in the monthly map update), I edited these two freeway sections to add lane guidance for the exit:
https://osm.org/go/ZSARMrMmN-?way=557129765 -- 5 lanes, turn:lanes=through|through|through|through|slight_right https://osm.org/go/ZSARMurq5?way=557129764 -- 6 lanes, turn:lanes=through|through|through|through|slight_right|slight_right
OsmAnd Live picked up the changes and displays lane guidance as this:
The "through" lanes appear to be shown twice, with no exit lane guidance. Prior to my edit, the exit lanes were displayed as the usual "invented lanes" that OsmAnd displays for lane guidance when there are no turn:lanes directives. I suppose that the problem could also be that OsmAnd is showing the 4 through lanes, plus its 2 "invented" lanes, plus the 2 lanes indicated by my turn:lanes edit.
After downloading the January 31, 2018 updated map file, lane guidance displays correctly, so the issue is definitely with OsmAnd Live map integration: