The stats are in from a Johnson County, Kansas DUI checklane last weekend. 1,226 cars were stopped and 11 DUI arrests were made. That is less than 1%. Here is a link to the KC Crime Scene Blog’s entry on this issue: http://blogs.kansascity.com/crime_scene/2006/05/joco_dui_991_of.html
This checklane involved officers from 6 different agencies, including the Sheriff’s Department and Highway Patrol. 99.1% of the drivers detained and delayed in this checklane were sober. Considering the manpower required to stop that many cars, and the fact that most of the officers were probably being paid overtime to work this roadblock, you’ve got to wonder whether this is effective law enforcement or not. Considering that the Johnson County Sheriff’s Department just got a Mobile DUI van to take to future checklanes, for the sum of about $86,000.00, I assume the checklanes won’t stop any time soon.