What does a pennant-shaped sign signify?

Answer: A — No passing

A pennant-shaped sign is specifically used to indicate that passing is not allowed. This type of sign, usually placed on the left side of the roadway, alerts drivers to the no-passing zone ahead, which is usually found in areas where visibility is limited, such as curves or hills. The design allows for immediate identification by motorists, ensuring they understand that they should not attempt to overtake vehicles in that section of the road. A no-passing sign is crucial for maintaining safety and preventing accidents in these potentially hazardous driving conditions. The other options represent different types of signs: stop signs are typically octagonal, yield signs are triangular but not shaped like a pennant, and warning signs often have a diamond shape. Each sign shape serves a specific purpose in guiding and regulating traffic, contributing to overall road safety.