When flagging traffic, we want to do everything we can to prevent an accident. An accident can mean damaged vehicles and equipment, personal injury and/or fatalities. Being a flagger is a very important job, because you have the responsibility of protecting the public, your fellow workers, and yourself. A flagger is used where conditions are constantly changing. For traffic control to be effective, we put out the necessary signs in advance to warn motorists they are entering a construction area and to let them know that a flag person will be giving directions. Motorists will be looking for the promised flag person, and should be able to spot you quickly. That is one reason you wear a fluorescent vest. So you will stand out. Depending on state requirements, paddles or flags of the correct size must be used. Flags should be at least 24″ square and use one standardized set of signals.