android - getting alternative routes from openstreetmaps -


i'm developing android application detect traffic jams , map on openstreetmaps.in navigating between current location , destination if traffic jam detected application should suggest other alternative routes.how can these alternative routes openstreetmaps.

enter image description here

a1 - alternative route 1, a2 - alternative route 2

some of online routers osm have avoid areas feature.


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