Final answer:
The 'DIVIDED HIGHWAY' sign alerts drivers that the road ahead splits into two separate roadways by a median, indicating the presence of opposite direction traffic on each side.
Step-by-step explanation:
The "DIVIDED HIGHWAY" sign is a traffic sign used to inform drivers that they are approaching a section of road where the opposing flows of traffic are separated by a physical median or barrier. It indicates that the road ahead is split into two separate roadways and each roadway is designated for traffic moving in opposite directions. This sign is essential for safety as it alerts drivers to adjust their driving due to the changed road conditions. It is usually seen before the roadway begins to split, allowing drivers enough time to react appropriately and avoid any confusion as they continue.