What are large flashing arrow panels used for in work zones?

Large flashing arrow panels are specifically designed to guide drivers through work zones by indicating the proper way to navigate through potentially hazardous or altered road conditions. These panels play a critical role in ensuring safety by directing traffic away from closed lanes or guiding motorists into available lanes. The flashing arrows catch the attention of drivers, making it clear which direction they should go, thus helping to reduce confusion and the risk of accidents in areas where roadwork is taking place.

Options like displaying traffic speed limits, indicating pedestrian crossings, or showing road repair schedules do not serve the primary function of directing drivers through changing road conditions as effectively as large flashing arrow panels do. Therefore, the use of these panels is essential in work zones to maintain flow and ensure the safety of both drivers and construction workers.