What is the purpose of rumble strips in work zones?

The purpose of rumble strips in work zones is primarily to alert drivers of upcoming changes through vibration and noise. These tactile and audible warnings serve as a critical safety measure, particularly in areas where drivers may need to reduce their speed or pay extra attention due to construction or other road work. When vehicles pass over rumble strips, the vibration and sound created encourages drivers to stay alert and can prompt them to make necessary adjustments to their speed or driving behavior well in advance of any changes in the road or traffic conditions.

The effectiveness of rumble strips in promoting safety in work zones cannot be overstated, as they provide an additional layer of warning beyond standard road signage and visual cues. By effectively communicating changes in the driving environment, rumble strips contribute significantly to reducing the risk of accidents in these transitional areas.