Big-B-Router

Offline Anti-ALPR routing and navigation for your phone.

Ipynb to edit out ALPR exposed roads from PBF files. This can then be converted into an OBF file for use in OsmAnd.

Finished OBF file demo

bigbrouter.webm

OsmAnd is available for iOS as well, although I have not tested.

Requirements

cli tool:

• osmium-tool
  • AUR link

python environment:

• jupyter-notebooks
• geopandas
• folium
• pyrosm
• pyosmium

Usage

After downloading the Requirements,

• Download pbf map data of the state from geofabrik or from other providers
• Prep the pbf data with the pbf-prep.ipynb
• Process the data with big-b-router.ipynb
• Plug in the output to OsmAndMapCreator
• Transfer OBF file to phone and import with OsmAnd

Potential improvement ideas

• Mark roads as either [ice roads, 4WD roads, or low emission zones]; then the anti-ALPR routing could be toggled in OsmAnd route parameter settings to avoid or not avoid the road type (ie. on/off switch for ALPR avoidance).
  • low emission zones are ways that define an outer boundary
    • write all roads and let osmand handle LEZ's? (No low emission zones in the US that I could find)
    • easier option? Looked at an LEZ in osm and did not see any nodes on road intersections. (no need to include nodes at intersections?)
    • relation w/ boundary="low_emission_zone" write geoseries.exterior of alprtrap geometries as the member way of each LEZ to output file?
    • https://www.openstreetmap.org/relation/19100581#map=14/52.07998/4.30844
  • ice roads, 4wd roads as highway tags ice_road, ford, winter_road?;
    • write roads with tags, longer roads that are split would go about the same process, but with tags on the cropped section (use overlay how=intersection geometry in addition to difference?)
• Add the ability to add obstacles that would be defined in the routing.xml to add x amount of time. The idea being that you would shrink the cone to remove roads, and have a larger area that would be disadvantaged by the "obstacle". Typically a close road would pick up the LP (license plate), but a further road may be perpendicular, which may pickup vehicle metadata which you would prefer to avoid (through time penalties), but not remove.

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Credits

• Impossible without OpenStreetMap data & contributors
• pyosmium / osmium - nothing else worked for editing osm data and keeping/returning it as a pbf
• OsmAnd and OsmAndMapCreator
• pyrosm for reading pbfs to geopandas

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