Will truck speed profiles be added to core?

Open Source Routing Engine
1

Hi, I was wondering if you planned to add the truck profiles listed here https://github.com/graphhopper/directions-api/blob/master/supported-vehicle-profiles.md to the open source Graphhopper core?

Currently I believe I’d have to subclass or create a modified version of the CarFlagEncoder to add truck speeds to Graphhopper; looking for an easier solution : )

Thanks!

2

Hi Phil,

good question :slight_smile: ! We’ve decided to keep them closed source for now, as these are very specific needs although we see the generic application as e.g. the creation is relative powerful mechanism:

public static final TruckFlagEncoder createSmallTruck(String name) {
    return new TruckFlagEncoder().setName(name).
            setHeight(2.7).setWidth(2, 0.4).setLength(5.5).
            setWeight(2080, 2080 + 1400).
            init();
}

In general this is not really a big task to implement this with a bit of GraphHopper knowledge, but the specific things in OSM can get VERY ugly: https://www.openstreetmap.org/user/karussell/diary/36220

Of course, in the next months we’ll make creating such new profiles a lot easier without the need to understand or workaround the underlying OSM structure. See the related post: More flexibility in GraphHopper

3

Hi Peter - thanks for your reply. I see your point re: difficulty in interpreting OSM specifics; things can get quite ugly with all the different tag formats. Probably when / if I need a truck encoder I’ll just base it on the Car Flag encoder but enforce a maximum speed. I’m not convinced that the height / weight restrictions (e.g. low bridge etc) will be accurate enough in OSM data to justify that level of modelling anyway - at least for route optimisation. I look forward to the developments in making profiles easier - keep up the good work : )

4

Hy, are there some updates concerning truck flag encoder for the open source version? As you mentioned above you decided to keep them closed source for now (january 2016).

5

Kind of, yes. See https://github.com/graphhopper/graphhopper/pull/936 and https://github.com/graphhopper/graphhopper/pull/1112

6

Hi, I don’t really understand how this makes using a truck profile possible.
Can you explain?

7

With the latest work: https://github.com/graphhopper/graphhopper/pull/1447 you can define several attributes per edge much easier and use them for a restriction. E.g. see this discussion where this pull request is further enhanced and provides simple configuration options via JSON or scripting: Flexible Vehicle Profiles