What is one purpose of using advance warning signs in work zones?

The purpose of using advance warning signs in work zones is primarily to inform drivers about changes ahead. These signs serve as crucial tools for alerting motorists to upcoming construction activities, detours, lane closures, or other traffic modifications that they will encounter. By providing early notice, these signs enable drivers to adjust their speed and behavior, making them more aware of potential hazards in the work zone. This proactive communication is essential for enhancing safety for both drivers and workers by facilitating smoother transitions through the area and reducing the likelihood of accidents.

Advance warning signs are strategically placed to give drivers ample time to respond to changing conditions, ultimately leading to better traffic management and safety. They help to set the expectation that the normal driving environment will be altered, allowing drivers to navigate through the work zone with greater caution and awareness.