What is the purpose of an "adjacent vehicle warning" sign?

The purpose of an "adjacent vehicle warning" sign is to inform drivers of possible collisions with adjacent traffic. This sign serves as a crucial safety measure, alerting drivers to be particularly vigilant and cautious when maneuvering close to other vehicles. It is designed to enhance awareness of situations where other vehicles may pose a risk, such as when merging or changing lanes. By providing this warning, drivers can make better-informed decisions, helping to prevent accidents stemming from unexpected interactions with adjacent vehicles. Understanding this warning is vital for maintaining safe driving practices, especially in areas with higher traffic densities.

The other options focus on different traffic scenarios, such as indicating a stop sign, school zones, or curves in the road. Each of these signs has its own specific purpose and message that addresses particular driving conditions, but none specifically warn drivers about the potential for collisions with nearby vehicles.