NORI - naive aggregated road traffic estimation

Estimate average daily traffic on a road network by sampling a distribution of shortest paths.

Instructions

• Download, compile, install OSRM

bash git clone https://github.com/Project-OSRM/osrm-backend/ cd osrm-backend mkdir build cd build cmake .. cmake --build . sudo cmake --build . --target install

• Construct routing graph for area of interest

```bash

Download OSM extract

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

Build routing graph

osrm-extract -p /usr/local/share/osrm/profiles/car.lua berlin-latest.osm.pbf osrm-partition berlin-latest.osrm osrm-customize berlin-latest.osrm ```

• Start OSRM backend server

bash osrm-routed --algorithm mld berlin-latest.osrm

• Compile this project

bash cargo build --release

• Run this project

bash cargo run --release -- sample -n 1000 --osrm ~/Downloads/berlin-latest.osrm --geojson output/berlin.geojson --routes output/berlin.routes --uniform2d 13.2392 52.4422 13.5125 52.5738

Ideas

• log-normal distribution of trip lengths
• start/endpoints weighted by population-density, POI-density
• local conversion factor for ground truth

TODO

• simplify geometry (merge lanes)
• Fix interesting OSRM fail (brandenburg-latest.osrm):

Error: reqwest::Error { kind: Request, url: "http://127.0.0.1:5000/route/v1/driving/13.272295023439796,52.49581830313898;13.383933517069835,52.54885321672839?annotations=nodes", source: hyper::Error(IncompleteMessage) }