Difference between open source car and graphhopper maps car


I noticed some distance differences between open source car and the graphhopper maps car profile.


We applied some further heuristics that are beyond the open source project: Improved Feature: Better ETA values Basically detecting inner and outer city and then applying different speed values, plus taking into account different vehicle profiles.

So we have a post processing after the usual import and change the speed values based on road type and inner/outer city.

Can you also give me some hints how you achieved that the truck drive on the highway instead of national roads?

You convert the different tagging into different speed / priorities just like we do for car. I do not remember anything special.


Can you explain a bit more about your solution?