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Bike Lane Gap Mapper

Map where safe bike lanes break and which gaps would connect the most people.

Intermediate16h1–3 people15/20 fit
TL;DR

Build Bike Lane Gap Mapper for cyclists and urban planners in ~16h with 1–3 people. Stack: Leaflet + Python + OpenStreetMap.

Why it wins: Data-driven urban planning that judges can see on a map.

Build flow

01 · Problem
Cycling stays low because lanes stop suddenly at dangerous junctions.
02 · Solution
Load open street data, detect gaps between lane segments, rank gaps by population and destinations served and let cyclists vote.
03 · Build
  1. 1Download lane data
  2. 2Compute gaps
  3. 3Rank by catchment
  4. 4Build a voting map
04 · Demo
Show the top-ranked gap on the city map and its catchment.

MVP checklist

  • Gap detection
  • Impact ranking
  • Cyclist votes
  • Shareable map

Tech stack

TechRole
LeafletInteractive maps
PythonBackend / scripting
OpenStreetMapTooling

Reference repos

Open-source projects you can build on. Links checked 2026-10-31.

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