What is the least desirable method used to control traffic in a work zone?

The baton system is considered the least desirable method for controlling traffic in a work zone primarily due to its limited effectiveness in managing vehicle flow and ensuring safety. While it can be useful in certain scenarios, the baton system relies heavily on the judgment and alertness of the flagger. In busy or high-speed traffic environments, this can pose significant risks, as it may not provide adequate control over oncoming vehicles or prevent misunderstandings between drivers and the flagger.

Other methods like light signals or road closures are generally more effective because they offer a more structured approach to guiding traffic. Light signals can provide clear visual cues based on the flow of traffic, and road closures can completely eliminate the risks associated with vehicles entering the work zone. Flagging is an essential skill but typically relies on hand signals, which may lead to confusion or miscommunication without supplementary signage and controls, making the baton system less reliable in dynamic traffic conditions.