What does a merge sign indicate to drivers?

Answer: C — To be prepared to change lanes

A merge sign is an important traffic signal that alerts drivers that they need to be prepared to change lanes due to the merging of traffic. This situation typically occurs on highways where one road converges into another. The sign prompts drivers to pay attention to their surroundings and adjust their speed or position accordingly to ensure safe merging. Understanding this is crucial for maintaining smooth traffic flow and minimizing the risk of accidents. It encourages drivers to look for opportunities to safely change lanes and to yield to other vehicles that may be merging into their lane. Being aware of merge signs promotes safe driving practices and helps to manage potentially hazardous situations on the road.