osrm-backend: A C++ repository from bcassedy

Open Source Routing Machine

Linux / macOS	Windows	Code Coverage

High performance routing engine written in C++14 designed to run on OpenStreetMap data.

The following services are available via HTTP API, C++ library interface and NodeJs wrapper:

Nearest - Snaps coordinates to the street network and returns the nearest matches
Route - Finds the fastest route between coordinates
Table - Computes the duration of the fastest route between all pairs of supplied coordinates
Match - Snaps noisy GPS traces to the road network in the most plausible way
Trip - Solves the Traveling Salesman Problem using a greedy heuristic
Tile - Generates Mapbox Vector Tiles with internal routing metadata

To quickly try OSRM use our demo server which comes with both the backend and a frontend on top.

For a quick introduction about how the road network is represented in OpenStreetMap and how to map specific road network features have a look at this guide about mapping for navigation.

Related Project-OSRM repositories:

node-osrm - Production-ready NodeJs bindings for the routing engine
osrm-frontend - User-facing frontend with map. The demo server runs this on top of the backend
osrm-text-instructions - Text instructions from OSRM route response
osrm-backend-docker - Ready to use Docker images

Documentation

Full documentation

Contact

IRC: irc.oftc.net, channel: #osrm (Webchat)
Mailinglist: https://lists.openstreetmap.org/listinfo/osrm-talk

Quick Start

The easiest and quickest way to setup your own routing engine is to use Docker images we provide.

Using Docker

We base our Docker images (backend, frontend) on Alpine Linux and make sure they are as lightweight as possible.

Download OpenStreetMap extracts for example from Geofabrik

wget http://download.geofabrik.de/europe/germany/berlin-latest.osm.pbf

Pre-process the extract with the car profile and start a routing engine HTTP server on port 5000

docker run -t -v $(pwd):/data osrm/osrm-backend osrm-extract -p /opt/car.lua /data/berlin-latest.osm.pbf
docker run -t -v $(pwd):/data osrm/osrm-backend osrm-contract /data/berlin-latest.osrm

docker run -t -i -p 5000:5000 -v $(pwd):/data osrm/osrm-backend osrm-routed /data/berlin-latest.osrm

Make requests against the HTTP server

curl "http://127.0.0.1:5000/route/v1/driving/13.388860,52.517037;13.385983,52.496891?steps=true"

Optionally start a user-friendly frontend on port 9966, and open it up in your browser

docker run -p 9966:9966 osrm/osrm-frontend
xdg-open 'http://127.0.0.1:9966'

In case Docker complains about not being able to connect to the Docker daemon make sure you are in the docker group.

sudo usermod -aG docker $USER

After adding yourself to the docker group make sure to log out and back in again with your terminal.

We support the following images on Docker Cloud:

Name	Description
`latest`	`master` compiled with release flag
`latest-assertions`	`master` compiled with with release flag, assertions enabled and debug symbols
`latest-debug`	`master` compiled with debug flag
`<tag>`	specific tag compiled with release flag
`<tag>-debug`	specific tag compiled with debug flag

Building from Source

The following targets Ubuntu 16.04. For instructions how to build on different distributions, macOS or Windows see our Wiki.

Install dependencies

sudo apt install build-essential git cmake pkg-config \
libbz2-dev libstxxl-dev libstxxl1v5 libxml2-dev \
libzip-dev libboost-all-dev lua5.2 liblua5.2-dev libtbb-dev

Compile and install OSRM binaries

mkdir -p build
cd build
cmake ..
cmake --build .
sudo cmake --build . --target install

Grab a .osm.pbf extract from Geofabrik or Mapzen's Metro Extracts

wget http://download.geofabrik.de/europe/germany/berlin-latest.osm.pbf

Pre-process the extract and start the HTTP server

osrm-extract berlin-latest.osm.pbf -p profiles/car.lua
osrm-contract berlin-latest.osrm
osrm-routed berlin-latest.osrm

Running Queries

curl "http://127.0.0.1:5000/route/v1/driving/13.388860,52.517037;13.385983,52.496891?steps=true"

Request Against the Demo Server

Read the API usage policy. Simple query with instructions and alternatives on Berlin:

curl "https://router.project-osrm.org/route/v1/driving/13.388860,52.517037;13.385983,52.496891?steps=true&alternatives=true"

Using the Node.js Bindings

The Node.js bindings provide read-only access to the routing engine. We provide API documentation and examples here.

You will need a modern libstdc++ toolchain (>= GLIBCXX_3.4.20) for binary compatibility if you want to use the pre-built binaries. For older Ubuntu systems you can upgrade your standard library for example with:

sudo add-apt-repository ppa:ubuntu-toolchain-r/test
sudo apt-get update -y
sudo apt-get install -y libstdc++-5-dev

You can install the Node.js bindings via npm install osrm or from this repository either via

npm install

which will check and use pre-built binaries if they're available for this release and your Node version, or via

npm install --build-from-source

to always force building the Node.js bindings from source.

For usage details have a look these API docs.

References in publications

When using the code in a (scientific) publication, please cite

@inproceedings{luxen-vetter-2011,
 author = {Luxen, Dennis and Vetter, Christian},
 title = {Real-time routing with OpenStreetMap data},
 booktitle = {Proceedings of the 19th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems},
 series = {GIS '11},
 year = {2011},
 isbn = {978-1-4503-1031-4},
 location = {Chicago, Illinois},
 pages = {513--516},
 numpages = {4},
 url = {http://doi.acm.org/10.1145/2093973.2094062},
 doi = {10.1145/2093973.2094062},
 acmid = {2094062},
 publisher = {ACM},
 address = {New York, NY, USA},
}

bcassedy/osrm-backend