Author Archives: Andreas

Turn Restriction Support for GraphHopper’s Directions API

Today we are proud to announce another big improvement of GraphHopper’s Directions API: We have added turn restriction support to our routing solutions. Turn costs and turn restrictions The time it takes to go from one place to another obviously depends on how far and how fast we travel. Our speed critically depends on the […]

Incredibly fast distance matrix calculations with GraphHopper

One of the main purposes of our open-source routing engine is calculating the ideal route to get from one place to another. Using publicly available map data from OpenStreetMap it can calculate the optimal route for a given source-target pair for many different vehicles and flexible optimization criteria. However, such route calculations become considerably more […]