[GraphHopper] alternative routes

[Mikhail Zemlyanukha]

Hello Peter and all,

I'm looking for a routing engine which could calculate alternative paths as
well, for example like in BRouter http://brensche.de/brouter/ (I'm a Java
guy, so I'm looking at Java or C# solutions first). Could you please advice
if it's feasible to use GraphHopper for this purpose, and what changes are
needed, at high level (I'll try to dig into details myself)?

An important thing which I can't really understand, is the criteria to
consider a path as an alternative or not (as generally there can be almost
infinite set of paths)).

Physically this task is for providing info about alternative routes in a
city, considering traffic jams situation. For example, on my regular way
from home to office there are several 'critical' nodes where jams usually
appear, so I would like to know their current status to select a better
alternative. The idea is to list the alternatives to driver and provide
jams info along the routes.

I appreciate any input about possible approaches to solve for this problem.

Thanks in advance,
Mike
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