Unclassified Highway is ignored in favor of longer route

[xeruf]

🐞 routing report

Routing engine

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

Routing Profile

Car

Start and end points

Near Riesa, Saxony, Germany: Navigate from "Prausitz" to "Seerhausen"

Actual and expected routes

One could continue the "Prausitzer Straße" towards Mehltheuer on a highway=unclassified, but OsmAnd Routing adds a corner southwards of about one kilometer extra.

Is this a regression?

Don't know

🌍 Your Environment

OsmAnd Version: 4.2.7

Device and Android/iOS version: Lineage on Fairphone

Maps used (online or offline): both

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

Anything else relevant?

[vshcherb]

https://www.openstreetmap.org/directions?engine=graphhopper_car&route=51.2561%2C13.3121%3B51.2667%2C13.2546#map=14/51.2522/13.3071

Similar to OSRM OsmAnd suggest https://osmand.net/map?start=51.257403%2C13.311653&end=51.266426%2C13.253460&mode=car#14/51.2590/13.2968

The penalty is probably pretty high but in total unclassified road considered to be 60 seconds extra.

[xeruf]

an absolute value? The penalty should depend on the length of the road, shouldn't it?

[vshcherb]

Penalty is a coefficient to time spend on the road, it's not a value