Olathe conducted a checklane on July 28, 2007 and stopped a whopping 1,290 vehicles. They got 14 DUI arrests. That is about 1.1%. Another way to look at it is that they had a 98.9% failure rate. 1,276 people who weren’t intoxicated were stopped. I would also estimate that about one-third of the cases will not end in a conviction once they make their way through the court system. So, the actual failure rate will be much higher. I don’t often see the results of the Kansas checklanes, so it is interesting to see that these things are just as ineffective in Kansas as they are in Missouri.