2016 ∙ 1 ∙ 27  /  Mobility

Map of Car Collisions with Pedestrians, Cyclists, and Property

Safer roads in Toronto became a preoccupation for me when biking became my main way to get around the city. As a rule, I feel safe on my bicycle, but I am reminded from time to time of the potential danger; sometimes by the menace of psychotic motorists and, more often, by the menace of everyday motorists using poorly designed road infrastructure.

Blaming motorist is a common pastime of cyclists, but does little to lessen the danger they pose. We can complain about the time someone almost hit us and take pictures of cars parked in bicycle lanes, but in the end we must know that that only better infrastructure can improve our safety.

It is obvious to me when infrastructure does not work properly, but I am by no means an expert in city planning, or in proper infrastructure, so I will not offer my planning wisdom. What I want to do is create a series of maps exploring what is happening on Toronto roads. Why do some neighbourhoods have fewer collisions, injuries, or deaths than others? Can success be tied to better infrastructure?

The choropleth map above shows each of Toronto's neighbourhoods. The measure overlaid is the number of car collisions with pedestrians, cyclists, and property in each neighbourhood in 2011. Because some neighbourhoods are larger, I am dividing the number of collisions by the kilometres of road in each neighbourhood to help normalize the number.


  • Data on crashes in Toronto from Wellbeing Toronto : here
  • Neighbourhood shapes : here
  • Leaflet.js map created using Folium