Travelers using Chicago’s Midway Airport are finding a curious new addition to security lines, the Tribune reports—ski-slope-like signs meant to funnel travelers into different lines based on how quickly they're likely to be able to speed through. They're color coded to the “difficulty level” of each option: Green circles for beginning travelers, blue circles for advanced travelers, black diamonds for experts.
In this case, “expert” means you have your shoes off and laptop out before being told; the goal is to reduce frustration and delays by getting frequent fliers through security more quickly, while families and others who need time won't be pressured. But what if non-veterans pick the black diamond line? “That’s your choice,” said a security official. “We’re not going to tackle you.”