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Directions API

How to model multiple delivery routes with a single vehicle?

Introduction In this tutorial we are going to show you how to model a vehicle routing problem with vehicles that can have multiple return trips to the depot or hub. For example, let us assume you have 2 drivers that have a car much like the one on the figure below. It has an electric […]

GraphHopper Directions API News June

The GraphHopper Directions API is continually improved and we’ll keep you up to date with the newsletter, today the first time publicly available as blog post. We added more features to the Route Optimization API Often there are more customers than the available vehicle fleet can serve. In this case, you can now assign priorities […]

Visiting every pub in Dublin

In our last blog post we elaborated the problem of finding a route through Dublin without passing by any Pub. Rory gave us the idea for this, and now again, pointed us to an article reporting that recently there was a Japanese man trying to visit each and every pub to drink a pint of […]

How does GraphHopper send out traveling salesmen?

The traveling salesman problem is the problem of finding the shortest possible route through a given set of locations whereby each loaction must only be visited once and the traveling saleman must return to its start location. A very good introduction into traveling salesman problems has been done by William Cook. It is fun to […]