v2 - MA Crash Map

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v2 - MA Crash Map

✓ Published1🌍 Public

Last edited Oct 28, 2024

Created on Oct 28, 2024

This map of Massachusetts shows the geographic distribution of traffic crashes using red dots plotted over the state’s outline. The visualization uses GeoJSON for the state boundary and crash data containing coordinates to place each incident on the map. The code relies on D3 libraries including `d3.geoMercator` for the map projection, `d3.geoPath` to generate the state’s path, and D3’s projection methods to convert crash latitude and longitude into screen coordinates for circle placement. The crash data originates from the Boston Crash Dataset.

AI-generated description

Data

The data I propose to visualize for my project is from a Boston Crash Dataset. This Dataset is pulled from data.boston.gov, provided as part of the Vision Zero Boston program, contains records of the date, time, location, and type of crash for incidents requiring public safety response which may involve injuries or fatalities. All records are compiled by the Department of Innovation and Technology from the City's Computer-Aided Dispatch (911) system and verified as having required a response from a public safety agency. To protect the privacy of individuals involved in these incidents, we do not indicate the severity of specific crashes or whether medical care was provided in any specific case.

I want to understand the geographic distribution of crashes. I want to understand how crashes have changed of time (time of day, time of week, time of year, year-after-year, etc.) I want to identify subsets of the data where crashes have a high value. I want to identify crash rates for location types. I want to identify crash rates for mode/vehicle type.

Questions & Tasks

The following tasks and questions will drive the visualization and interaction decisions for this project:

How does the amount of crashes vary over geographic location? Is there any patterns (correlation) between the number of crashes and the time of day? day of week? time of year? from year-to-year? Do different locations have varying crash rates? DO different vehicle types have higher crash rates?

MIT Licensed

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