jakecoppinger / australian-cycleway-stats

Australian Cycleway Stats

A website for comparing cycleway and safe street implementation across Australia!

See Overpass Turbo queries that power the stats in static-backend/src/utils/overpass-queries.ts. Corrections or improvements very welcome.

Architecture

• The static-backend code makes queries to Overpass Turbo (for OpenStreetMap data) and for Wikidata
  • It caches these Overpass Turbo responses
• It generates frontend/src/data/data-by-council.json
• The frontend code consumes this data and displays it in tabular format

See READMEs in the frontend and backend folders for further instructions on running.

Notes on overpass queries

• Queries that contain ({{bbox}}); will run based on the current location you're viewing. If you pan/zoom the map and press run again you will get new data.
• Queries that include map_to_area will be locked to a particular relation (a specified boundary). You can search for these relations on OSM, for example the City of Sydney is https://www.openstreetmap.org/relation/1251066.

Resources for Overpass Turbo requests

Roads <=30kmh or living street (Overpass Turbo queries)

In viewport

https://overpass-turbo.eu/s/1Eqj

[out:json][timeout:25];
(
  way["maxspeed"="5"]["highway"]({{bbox}});
  way["maxspeed"="10"]["highway"]({{bbox}});
  way["maxspeed"="20"]["highway"]({{bbox}});
  way["maxspeed"="30"]["highway"]({{bbox}});
  way["highway"="living_street"][!"maxspeed"]({{bbox}});
);

out geom;

In council area

Where 1251066 is the OSM relation ID for the City of Sydney:

[out:json];
rel(1251066);map_to_area->.region;
(
  way(area.region)["maxspeed"~"^(5|10|20|30)$"]["highway"]["access"!="private"];
  way(area.region)["highway"="living_street"][!"maxspeed"]["access"!="private"];
);
out geom;

Zebra crossings

In NSW

• Work in progress: Counting how many, and by council

[out:json][timeout:25];
(
  rel(2316593);map_to_area
  ->.suburb;

  
  nwr["crossing"="marked"](area.suburb);
nwr["crossing"="zebra"](area.suburb);
  
);
out body;
>;
out meta qt;

https://overpass-turbo.eu/s/1E2I

In viewport (faster)

https://overpass-turbo.eu/s/1E2E

[out:json][timeout:25];

nwr["crossing"="marked"]({{bbox}});
nwr["crossing"="zebra"]({{bbox}});

out geom;

History

How how number of <= 30kmh (or shared street) changed over time

• Notes:
  • OSM started in 2007 and coverage increased in years afterwards
  • Accuracy or coverage at a point in time could be estimated by graph of % of roads with a maxspeed as a ratio of all roads
  • Could calibrate based on 50/40km changes and school zone changes
• Todo: filter out ways that aren't roads (eg some railways)

type:way and (maxspeed=5 or maxspeed=10 or maxspeed=20 or maxspeed=30 or (highway=living_street and maxspeed!=*))

https://dashboard.ohsome.org/#backend=ohsomeApi&groupBy=none&time=2007-10-08T00%3A00%3A00Z%2F2023-11-11T22%3A00%3A00Z%2FP1Y&filter=type%3Away+and+%28maxspeed%3D5+or+maxspeed%3D10+or+maxspeed%3D20+or+maxspeed%3D30+or+%28highway%3Dliving_street+and+maxspeed%21%3D*%29%29&measure=length&adminids=-2316593

Zebra crossings

• Caveats as above (on OSM history)

type:node and (crossing=marked or crossing=zebra)

https://dashboard.ohsome.org/#backend=ohsomeApi&groupBy=none&time=2007-10-08T00%3A00%3A00Z%2F2023-11-11T22%3A00%3A00Z%2FP1M&filter=type%3Anode+and+%28crossing%3Dmarked+or+crossing%3Dzebra%29&measure=count&adminids=-2316593