Support multiparameters - Avoid motorways + "prefer unpaved roads"

[sinkoneri]

Describe the routing engine used (required)

• OsmAnd's in-app offline routing
• Any online routing provider (YOURS, openrouteservice, OSRM, etc.)

Describe your routing Profile (required)

I have a motorcycle profile where I enable "prefer unpaved roads" bcos if I can I would love to ride offroad, but if no offroad route available I would like to go on paved backroads as a fallback option and awoid motorways in any circumstances.
But seems if no offroad route available, the navigation planner fallback logic doesn't take into account the avoid road settings.

Describe your start and end points (required)

Test1
From: Budapest, Hungary
To: Velence, Hungary

Test2
From: Berhida, Hungary
To: Velence, Hungary

Describe the actual route (required)

Test1 OsmAnd route (should not contain M7 which is a Motorway)
https://youtu.be/nO2mWsiIGa4?si=4c78oV-eYp3Gwl6M

Test2 OsmAnd route (should not contain M7 which is a Motorway)
https://youtu.be/jokYmFxpHjo?si=V8yk6GLhCI2vI1sU

Describe the expected route (required)

Test1:
At 0:18 avoid motorways enabled, than route calculated fine
At 0:38 see the excpected route in the linked video 0:38 via route 7 which is paralel with M7 motorway. Expected route.
At 1:07 I enble "prefer unpaved roads" then the route gets recalculated but the resulting route is wrongly goes via M7 motorway bcos avoid motorways is still enabled.

Test2:
Avoid motorways enabled and prefer unpaved roads also enabled.
Navigation wrongly goes via M7 motorway
0:25 prefer unpaved roads disabled route gets recalculated and the route is fine via E66.

Describe what Maps you used (online or offline) (required)

• Offline maps offered within the OsmAnd app for download.
• Online (tile / raster) maps

Your Environment (required)

OsmAnd Version: 4.6.13
Android: 14
Device model: Samsung S21 Phone

OsmAnd Version: 4.6.13
Android: 13                          
Samsung S6 lite tablet

Anything else? (optional)

No response

[yuriiurshuliak]

It appears that the "prefer unpaved roads" setting may not be accurately influencing route calculations when combined with "avoid motorways." In this case, the "prefer unpaved roads" option is not affecting calculations for unpaved roads, but rather for motorways. Most likely, this is expected behavior and as the route you indicated is quite difficult to calculate only on unpaved roads. The "prefer unpaved roads" option doesn't completely exclude unpaved roads from consideration but rather lowers their priority. You can find the web version of the map here.

[sinkoneri]

The map you linked doesn't contain any unpaved roads so if "avoid motorways" enabled, and can't calculate the route with unpaved tracks the prefered route should be this via route 7, which avoids M7 motorway.
I think the fallback route should check the avoid filters but now it ignores.

[vshcherb]

Tha's not an issue of routing engine but issue of routing configuration - https://test.osmand.net/map/?start=47.497380,19.037180&end=47.229784,18.650196&profile=car&params=car,avoid_motorway,prefer_unpaved,noglobalfile,hhoff#14/47.2507/18.6793

If both roads are paved, obviously that should have same cost and as we have penalty for avoiding motorways it should be lower. The issue that we can't use 2 params for speed but we probably can lower priority for both cases.

[xmd5a2]

I've made some corrections. Routes are calculated as expected but surface for motorway is not considered. It can be an issue in places like Alaska, Siberia where motorways have bad surface. At that moment I don't see how this can be improved without routing engine enhancement. New maps are not required.

motorcycle, avoid_motorway, prefer_unpaved

Case 1	Case 2