Proof of concept.This is an unofficial demo built by Datopian from the City of Evanston's public data. The official portal is data.cityofevanston.org. Questions or feedback: hello@datopian.com

A PortalJS proof of concept · data from the City of Evanston's ArcGIS Hub

Speed humps

Speed humps are a traffic calming device employed by the City of Evanston along with traffic circles.

Records
298
Formats
5
Last updated
Jul 3, 2025

Download & API

Speed humps (CSV)csv
Spreadsheet — attributes, with coordinates for point layers
Download
Speed humps (GeoJSON)geojson
GeoJSON — for web maps and GIS tools
Download
Speed humps (GeoParquet)geoparquet
Columnar — query with DuckDB / SQL
Download
Speed humps (map tiles)pmtiles
Vector tiles — embed in a map
Download
Live ArcGIS layer (source)arcgis
Download

Rendered from PMTiles, queried in-browser from GeoParquet — no server. How this works

Schema

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