What is the purpose of flashing arrow panels in construction zones?

Flashing arrow panels in construction zones serve the specific purpose of guiding drivers into designated lanes. These panels are designed to provide visual cues that alert motorists to changing traffic patterns due to construction or road work. By using arrows that flash or move, they effectively communicate to drivers where they need to go, helping to ensure safe navigation through areas that may have obstacles or altered road layouts. This function is essential for maintaining traffic flow and reducing the risk of accidents in potentially hazardous work zones.

Other options do not align with the primary function of flashing arrow panels. For instance, displaying traffic speed limits involves static signs rather than dynamic arrow panels. Indicating exits and showing construction updates typically relies on different types of signage that convey different types of information, rather than directing traffic lanes specifically.