When police in Czechoslovakia wanted to slow down speeding motorists, they came up with two solutions. The first was to install a series of traffic signals, which would have been expensive and time consuming. The lowest cost and easiest to implement measure was to deploy cardboard cutouts of miniskirt-wearing police women.
Clearly, the lowest cost measure is not always the best, and the Czech police realized this after the accident rate doubled in areas with "cardboard policewomen." Their conclusion? Women wearing miniskirts are a distraction to drivers. Who could possibly have imagined that?