How are work zones typically marked for visibility?

Work zones are primarily marked for visibility using cones, flags, signs, and barriers to warn of safety hazards. This approach serves several critical functions in ensuring safety for both workers and the public. The use of cones helps to delineate the work area and guide traffic, while barriers provide physical protection from vehicles. Flags serve to alert drivers to changes or hazards, especially in situations where visibility may be limited. Additionally, warning signs communicate specific instructions or hazards that drivers need to be aware of as they approach the work zone.

While other methods like sound alarms, bright colored uniforms, and digital signs can contribute to safety in different contexts, they are not the primary means of marking work zones. Sound alarms may alert workers but do not provide clear visual cues to drivers. Bright colored uniforms increase worker visibility but do not effectively mark the boundaries or hazards of the work zone. Digital signs can provide information but are not as universally utilized or effective in marking physical work zones as the combination of cones, flags, signs, and barriers. Thus, using these traditional markers ensures a comprehensive approach to maintaining visibility and safety in work zones.