New answers tagged osm2po
If I understood you you correctly, you are going to let Taxi-data (recorded costs) have some impact on an already calculated graph with fixed costs und to somehow influence the route while (or before?) calculating? Is your data already assigned to OSM-Ids (Ways?) or, as you have already mentioned, should rather be assigned to segments (partial ways between ...
As already commented: If you need to estimate better speeds for every road from your taxi tracks that is completely doable with GraphHopper and this open source map matching component for it.
Sounds like you are trying to implement what is known as Floating Car Data (FCD) analysis. This field has received a lot of interest from researchers since the analysis is far from trivial in most cases. There are multiple problems you have to solve, including but not limited to map-matching and routing. Depending on the temporal resolution of your taxi ...
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