What is another word for silent policemen?
Pronunciation: [sˈa͡ɪlənt pəlˈiːsmɛn] (IPA) 
Silent policemen, also known as traffic cones or traffic delineators, are traffic control devices that help regulate traffic flow. The term "silent policeman" is a colloquialism that refers specifically to the pillar-shaped traffic control devices that are often seen in urban areas. Other synonyms for silent policemen include "traffic barricades," "bollards," and "speed humps." These devices are used to prevent accidents and maintain order on the roads. With a wide variety of different types of traffic control devices available, there are many different synonyms for silent policemen that can be used depending on the specific context in which the devices are being used.
