wisconsin_crashes/README.md

This is a series of RMarkdown files that generates maps of crashes between motor vehicles and bikers and pedestrians in Wisconsin.

Data sources

• The crash data is from the UW TOPS lab: https://topslab.wisc.edu/
• School location data is from the Wisconsin DPI: https://data-wi-dpi.opendata.arcgis.com/
• County data is from the US census
• Basemaps are from StadiaMaps: https://stadiamaps.com/

Example figures

A map of crashes near East High School in Madison, WI:

Here is where the web maps are hosted

Wisconsin Bike Pedestrian Crash Map

To process data and generate figures

• Pre Process TOPS data make TOPS_data_process: This combines TOPS data exports from different years and reformats the data.
• OpenStreetMap Routing Machine make osrm: this downloads the most recent OpenStreetMap data for Wisconsin, and starts docker containers to run the OpenStreetMap Routing Machine to calculate IsoDistances.
• School Crash Maps make schoolpdfs: generates maps of all the schools in Wisconsin and where cars are hitting kids This script pulls in the TOPS data from a folder of csv’s that you’ve downloaded from the data retrieval tool. It also draws the walk boundary around each school, this is done with a OpenStreetMap routing engine that is running in a docker container. It also needs access to an API key for StadiaMaps to download all the basemap tiles. I recommend downloading the whole state and filtering the data with the script. You can edit file parameters/run_parameters to choose what county, school type, and district to generate maps for
• Dynamic Map make crashmaps_dynamic: This takes the TOPS data and generates dynamic leaflet maps to host on our website. It generates 4 maps: without a title (for in a frame), and with a title, in both English and Spanish.
• Milwaukee Specific map crashmaps_dynamic_milwaukee: generate a web map for Milwaukee that includes more fine-grained visualizations of crash densities.
• Crash summaries make crash_data_summaries: generates summary csv files that summarize the crash data for a given municipality and county by age, sex, race.

R Scripts

I'm working to move these to RMarkdown files

• City maps - generates maps for cities in Wisconsin where pedestrian fatalities occur.