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Transit Accessibility Beyond Fixed Distance Buffers in Ottawa

Overview

This project examined how transit connectivity can expand accessibility beyond a standard 1 km distance buffer. Three Ottawa locations, Canadian Tire Centre, Centrepointe, and Downtown, were analyzed to determine how nearby transit stops influence the total area accessible to residents.

Data Sources

  • Ottawa Transit Stops

  • Ottawa Census Dissemination Areas

  • Custom study locations

Methodology

  1. Created 1 km buffers around each study location.

  2. Identified transit stops located within each buffer.

  3. Generated secondary buffers around those transit stops.

  4. Dissolved overlapping polygons into a single accessibility area.

  5. Calculated and compared the total accessible area for each location.

Results

Project_3_Transit_Accessibility.png

Key Findings

Although all three locations began with the same 1 km radius, accessibility outcomes differed significantly. Centrepointe benefited from a dense surrounding transit network, resulting in the largest increase in accessible area. Canadian Tire Centre remained comparatively isolated, with fewer transit connections and a substantially smaller accessible area.

Skills Demonstrated

  • QGIS

  • Spatial Analysis

  • Buffer Analysis

  • Spatial Joins

  • Geoprocessing

  • Cartography

  • Data Visualization

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