49 lines
2.9 KiB
Markdown
49 lines
2.9 KiB
Markdown
## Routes for walking to school
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This script generates maps to analyze the potential walking routes for students to their school.
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- I excluded the addresses of the students from the repository.
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- The actual route generation is done with [`brouter`](https://github.com/abrensch/brouter) (using the *safety* profile) and [`OSRM`](https://github.com/Project-OSRM/osrm-backend) (for the boundary polygons), those are run locally in docker containers.
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- The basemap is pulled from Stadia Maps. The usage of the script is well within the free tier, you'll need an API key from them.
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## Data sources
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- School location data is from: https://data-wi-dpi.opendata.arcgis.com/
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- Madison Bike Level of Traffic Stress is from: https://data-cityofmadison.opendata.arcgis.com/datasets/cityofmadison::bike-lts/explore
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- Student addresses provided by school.
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## Example figures
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This script will generate a few figures:
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### A heatmap of student addresses:
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### A map of all the walking routes within the walk boundary:
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### A map of those walking routes colored by the level of traffic stress to bike
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### A map of cycling routes colored by the level of traffic stress to bike (with a 3 mile radius)
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## Using make
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- `make osrm-data`: downloads the OpenStreetMap data for Wisconsin, and preproccesses it for use with OSRM.
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- `make osrm-container`: starts the OSRM containers (backends and frontends) for walking and biking.
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- `make brouter-data`: clones the repositories for brouter and brouter-web and downloads the segment data. It also builds the docker images for brouter and brouter-web.
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- `make brouter-container`: starts the brouter containers (backend and frontend).
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- `make walk` will run *route_analysis.Rmd* which
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calculates the walking routes using OSRM.
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- `make cycle-osrm` will run *cycling_route_analysis.Rmd* which calculates the biking routes using OSRM.
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- `make cycle-brouter` will run *cycling_route_analysis_brouter.Rmd* which calculates the biking routes using brouter.
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## What-if analysis
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This allows you to make changes to the street network (add a bike path, reduce a lane on an arterial st) and see how it affects the routes that brouter chooses.
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This is a multi-step process:
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1. Make edits to OpenStreetMap in [JOSM](https://josm.openstreetmap.de/)
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2. Save the edited map as `map_edited.osm` in `data/osm/osm_edit/` (File -> Save As)
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3. `make osm_edit_generate_pbf` will take those edits and apply them to the `wisconsin-latest.osm.pbf` and generate `wisconsin-latest_edited.osm.pbf`
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## Misc.
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- [Bike Level of Traffic Stress (LTS)](https://www.dvrpc.org/webmaps/bike-lts/analysis/)
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## OpenStreetMap Data
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- [wisconsin-latest.osm.pbf](https://download.geofabrik.de/north-america/us/wisconsin-latest.osm.pbf)
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