Railway and waterway routing in GH 10.x

eman418 · March 4, 2025, 8:08am

Noob question but how do I create profiles for trains and ships in the latest GraphHopper? I’m aware that alternatives like OpenRailRouting exists, but a coarse approximation suffices for my purposes.

Edit: to elaborate, I need to take 2 points (origin & destination), project them to nearest point in road/railway/waterway network, then find the shortest path from projected origin to projected destination.

otbutz · March 4, 2025, 8:44am

If you’re talking public transport, then GraphHopper GTFS is your friend:

github.com/graphhopper/graphhopper

reader-gtfs/README.md

master

# GraphHopper GTFS

Here is a screenshot of a public transport query. The route with the earliest arrival time is highlighted in green. The three
non-highlighted alternatives have fewer transfers. They include a walk-only route (no vehicle boardings at all).

![gtfs preview](https://www.graphhopper.com/wp-content/uploads/2017/01/gtfs-preview.png)

# Quick Start

```bash
git clone https://github.com/graphhopper/graphhopper
cd graphhopper

# download GTFS from Berlin & Brandenburg in Germany (VBB) and the 'surrounding' OpenStreetMap data for the walk network
wget -O gtfs-vbb.zip https://www.vbb.de/fileadmin/user_upload/VBB/Dokumente/API-Datensaetze/gtfs-mastscharf/GTFS.zip
wget http://download.geofabrik.de/europe/germany/brandenburg-latest.osm.pbf

mvn clean package -DskipTests

# The following process will take roughly 5 minutes on a modern laptop when it is executed for the first time.

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eman418 · March 4, 2025, 9:19am

This is a bit overkill for me. I’m interested in routes for cargo trains/ships/trucks. Though for trains and ships the routes need not be super realistic.

karussell · March 4, 2025, 11:23am

The work from @easbar could be interesting for you: Extract WaySegmentParser from OSMReader by easbar · Pull Request #2448 · graphhopper/graphhopper · GitHub