Which flagger symbol indicates vehicles should prepare to slow down?

The symbol indicating that vehicles should prepare to slow down is associated with the "Slow" flagger symbol. This symbol serves as a crucial warning to drivers that they are approaching a work zone or potential hazard and should be ready to reduce their speed for safety purposes.

In the context of work zone safety, flaggers are responsible for managing traffic flow in and out of construction areas. The "Slow" symbol effectively communicates the need for caution and highlights the importance of being vigilant as drivers navigate through potentially dangerous areas where workers may be present. Additionally, it encourages motorists to be mindful of any changes in traffic dynamics, including the presence of pedestrians or equipment near the roadway.

Understanding the role of this symbol is essential for both flaggers and drivers, as it helps maintain safety not only for construction workers but also for road users. Properly recognizing and responding to the "Slow" signal can prevent accidents and ensure effective traffic management in work zones.