The Los Angeles Times has mapped over one-half a meg pedestrian accidents inward L.A. County inward gild to visualize the county's well-nigh unsafe intersections. Walking inward LA uses information from the California Highway Patrol to render a heatmap of the well-nigh unsafe intersections for pedestrians.
The heatmap highlights to a greater extent than than 800 intersections which bring a higher charge per unit of measurement of pedestrian injury or driblet dead than the county averages. The 817 unsafe intersections are every bit good available to hold upward viewed inward listing form.
Map developers volition hold upward interested inward this How We Did It article on how the map was created. The article explains how the information was collected, processed together with mapped. The heatmap information was added to the map tiles using TileMill, which is an economical means to visualize a large sum of information on an interactive map.
The map uses the Leaflet.label plugin to add together labels to around of the well-nigh unsafe intersections. The labels are together with thence connected to the highlighted locations using a custom pointer, created past times writing a modest extension to L.Path (the JavaScript is provided inward the article if yous desire to re-create this idea).
The LA Times article points out that many of the well-nigh unsafe intersections are inward around of the densest neighborhoods. This doesn't hateful that the map should hold upward normalized past times the sum of pedestrian traffic. If yous wanted to cut the release of pedestrian accidents every bit much every bit possible it would brand feel to endeavor together with increase the security at the intersections which are responsible for the well-nigh accidents whether or non they bring the well-nigh human foot traffic.
However it is interesting to compare the LA Times map of the well-nigh unsafe intersections alongside Eric Fischer's Daily Pedestrian Extrapolation map. This map shows intersection pedestrian counts (extrapolated to daily totals). The 2 maps produce appear to present that many of the well-nigh unsafe intersections inward LA are the intersections alongside a high human foot traffic, especially inward the Downtown area.
