Every year, the Alliance Against Intoxicated Motorists releases statistics regarding DUI arrests. Here are some of the numbers:
Top Arresting Departments:
Illinois State Police (statewide): 6,584
Chicago Police: 3,315
Top Cook Suburb: Cicero: 300 (runner-up Berwyn: 225)
Top DuPage Suburb: Carol Stream: 464 (runner-up Naperville: 369)
The whole list can be found here: https://www.aaim1.org/stats_dui.asp
They also produce a list of the “Top Cops” who made the most DUI arrests, which can be found here: https://www.aaim1.org/stats_topcops.asp It is interesting to me that the top 5 cops all are stationed in the Chicago area, and they make up 8 of the top 10. Overall, there were nine Chicago cops who made 100 or more DUI arrests in 2015, as well as another 2 Illinois State Police Officers patrolling the Chicago highways. Three officers had more than 225 arrests, and one had 310! Considering that the average officer works less than 250 days of the year, that is at least one DUI arrest per shift.