What equipment is essential for a flagman to effectively perform their duties?

For a flagman to effectively perform their duties, the most critical equipment includes a whistle and flags. The use of flags is fundamental in communicating with both roadway workers and oncoming vehicles. Flags can convey different signals such as stop, slow, or go, which is vital for maintaining the safety of workers in high-traffic situations. The whistle serves as an additional auditory signal, enhancing communication and alerting others to changes or hazards on the roadway.

While other options, such as reflective vests and road signs, contribute to overall safety and visibility, the direct role of a flagman in traffic control centers primarily on using flags and whistles to direct the flow of traffic and ensure safe passage through work zones. This hands-on approach to signaling is essential for protecting both workers and motorists.