Sobriety checkpoints are generating tens of millions of dollars in revenue for California law enforcement agencies, cities and counties. Police are far more likely to impound vehicles from unlicensed drivers than arrest a driver for a DUI. The Investigative Reporting Program at UC Berkeley has been able to determine how often police officers are arresting people for a DUI and how often they are impounding cars.
In Montebello, for instance, officers have impounded 62 cars for every DUI arrest. In Fremont, the ratio is one impound for every DUI arrest. Click on each city to find the ratio of DUI arrests to cars impounded during fiscal year 2008-09.
The markers don't indicate where the actual checkpoints took place. Scroll to the bottom and click on "DUI checkpoints statewide," which will take you to a bigger map, as well as a list along the side of each community and the number of vehicles impounded per DUI arrest.
View DUI checkpoints statewide in a larger map
Produced by Ryan Gabrielson, Agustin Armendariz and Lisa Pickoff-White
Sources: See Methodology