The vast majority of Chicago bike tickets go to cyclists in black neighborhoods, despite past criticism by community and cycling advocates that enforcement is uneven across the city.
I performed the data analysis that drove the story, written by Mary Wisniewski of the Chicago Tribune. I plotted and analyzed tens of thousands of rows of city data to show where these citations — mostly for riding a bicycle on the sidewalk — were being issued. An initial story was published in the spring of 2017. A follow up early in 2018 (archive) showed — despite promises from city officials that change would happen — that the pattern continued.
I created multiple maps and charts to display online and in print.
Here is a link to the graphics for the piece. The Chicago Tribune website recently switched over to a new CMS, which broke many of my interactive pieces. I am in the process of fixing them, so in the meantime I am including links to off-site versions.