Final answer:
A "Keep Right" sign is typically a vertical rectangle or a diamond that instructs drivers to remain on the right side of the road or obstacle, and comprehending its meaning is vital for road safety.
Step-by-step explanation:
The shape of a "Keep Right" sign is generally a vertical rectangle or a diamond in the United States. This sign instructs drivers to stay to the right-hand side of a traffic island, median, or obstacle on the road. When a driver sees a "Keep Right" sign, they should prepare to either stay on the right side of the road or merge right if the sign is indicating a split in the road or a traffic diversion.
Understanding road signs is crucial because they are designed to ensure the safety of all road users by directing traffic efficiently and predictably. Knowing what these signs mean and how to react appropriately is important for road safety, preventing accidents, and following traffic laws.