Which color indicates aisle direction?

• A. Black
• B. Pink
• C. Purple
• D. Blue

Answer: (A)

Color coding on station signage and floor markings is used to guide movement, with black commonly signaling the direction to move along an aisle. The high-contrast nature of black against typical light-colored floors makes it easy to spot from a distance and under varying lighting, helping passengers follow the intended path through the aisle smoothly. Other colors like pink, purple, and blue are usually reserved for different cues—such as information points, service areas, or safety notices—so they don’t serve as the general indicator for aisle direction.