Radios may be desirable even when visual contactis possible. Signals between the flaggers should not give the wrong message to motorists. All traffic waits for the pilot car. Provides guidance and speed control. In long lane closures, two pilot cars may be used.
Pilot cars require special signs and radios.
It is also helpful if hauling trucks need to be taken out of the closure along with traffic. When a flagger is used only to slow traffic, use the SLOW side of the paddle, and the word STOP should be covered. Never flag from inside a vehicle. Do not lean, sit, or lie on a vehicle. Location and visibility are very important in flagging operation.