What does the presence of a "Divided Highway" sign typically signify for drivers?

The presence of a "Divided Highway" sign indicates that drivers should be aware of an upcoming split in the road. This typically means that the highway they are traveling on will be divided by a median or barrier, separating traffic going in opposite directions. Being alert to this change is crucial for safe driving, as it may require adjustments in lane positioning and driving behavior to navigate the upcoming road configuration safely.

The other options do not accurately reflect the purpose of the "Divided Highway" sign. For example, the sign does not prohibit turning or require immediate speed reduction, nor does it ban all vehicles from the area. Instead, it serves as a caution for drivers to prepare for changes in the road layout.