What does a "Keep right" sign instruct drivers to do?

• A. Drive in the left lane
• B. Stay to the right side
• C. Turn right at the next intersection
• D. Prepare to make a lane change

Answer: (B)

The "Keep right" sign instructs drivers to stay to the right side of the road. This sign is typically used to ensure that vehicles travel in an orderly manner, especially on multi-lane roads where keeping to the right may facilitate smoother traffic flow and allow for passing on the left.

The instruction is particularly important on highways and roads with dual lanes where it is essential for slower-moving vehicles to stay on the right to allow faster-moving traffic to pass safely on the left. This enhances overall road safety by minimizing confusion and reducing the risk of collisions that can occur when drivers are not following designated lane usage.

In the context of road signs, it is crucial for drivers to adhere to the instructions provided, as they are designed to optimize both traffic efficiency and safety.