An interactive map built on July 10, 2017 by Daniel Friedheim with Leaflet in R.
Instructions: Click on a cluster to zoom in, then an icon for details about one of the 22,927 crashes over the 14-month period from 4/1/15 to 5/27/16, including 35 causing fatalities and 1,180 causing major injuries.
Source: “DC Car Crashes,” OpenDataDC: http://opendata.dc.gov/datasets/95254fae17bc4792bd47b53f71c2e503_19 .