Speed limit drops from 55 (traffic usually moves 60-65 on this expressway) to 45 at the top of the second overpass entering Garden City (still four lane expressway conditions); police sit in the left turn lane at the bottom of the overpass catching cars having not slowed yet. In the other direction, limit doesn’t increase from 45 to 55 until after the second overpass out of Garden City (well into four lane expressway conditions); police sit at end of second overpass, just ahead of the 55 sign running radar and easily catching cars already up to expressway speed.