Graphhopper local instance travel time

Question

I have local install of graph hopper. We use that for getting travel time between point A to point B.

in local instance how is the travel time computed by graphhopper? I know it uses OSM image but is the travel time returned is based on some historical time data?

Thanks

Answer 1

If you use the open source routing engine there are some heuristics based on maximum speed, road type and more to calculate the average speed estimate for a street.