What is the first official hand movement for flagging?

The first official hand movement for flagging is stop. This signal is crucial for ensuring the safety of both flaggers and road users. When a flagger uses the stop signal, it is represented by holding a flag in front of them, which indicates to approaching traffic that they need to come to a complete halt. This action serves to prevent accidents and potential injuries by controlling and regulating traffic flow in work zones or areas where roadway conditions may be hazardous.

In flagging practices, the stop signal is typically the initial action taken to manage vehicles on the road effectively. It establishes a clear directive for drivers to halt, providing the flagger the necessary time to assess the situation and manage the flow of traffic safely. This foundational movement is essential in maintaining a secure environment in construction or road maintenance areas, making it a critical component of flagging protocol.