What type of traffic control is typically used when road work is in progress?

When road work is in progress, flags and temporary signals are the most effective types of traffic control to ensure safety and manage traffic flow. Flags and temporary signals are designed to provide immediate, responsive guidance to drivers in changing conditions. They can be easily set up and removed based on the needs of the work zone.

Flags, held by a flagger, indicate to drivers when to stop, proceed with caution, or continue at full speed. This real-time interaction between the flagger and drivers helps navigate the dynamic conditions that arise during road maintenance projects. Temporary signals, on the other hand, offer a more automated form of traffic management, effectively directing vehicles through or around work zones.

The use of permanent signals is not suitable in this context as they are intended for long-term traffic management rather than temporary situations. Digital signage can provide valuable information but does not substitute for the need for active traffic control in a work zone. Roadside advertising has no role in traffic control during road work. Therefore, the combination of flags and temporary signals is essential for maintaining order and safety while construction or maintenance activities are underway.