BRouter: alternative route calculations
Sometimes the routing result is not what you want, and you are looking for some other way,
following the same routing preferences, but not following the way of the first choice routing result.
Maybe you don't like the first choice, or you are planning a roundtrip and don't want to go back
the same way. For this purpose, BRouter can calculate alternatives.
This feature is well known from handheld-navigation systems, but not found in online services.
This is because these online services need to use pre-calculations for fast processing
and cannot handle individual routing criteria. BRouter does not do any precalculations for
specific routing profiles, so it can do whatever you ask for.
When using a second choice route, you may want to recalculate the route using via or nogo points
in order to define the overall routing according to your preferences but have a route that
is first choice except for these explicit constraints.