Red-Brown colors on red-light readable maps are used to identify what?

• A. Water features
• B. Vegetation
• C. Cultural features and all relief features and elevations
• D. Main roads

Answer: (C)

Red-brown on red-light readable maps shows both relief and cultural features. It’s the color used for contour lines and elevation marks to convey the terrain’s shape, along with cultural features such as roads, buildings, and boundaries that are not water or vegetation. This pairing helps you read elevation and man-made features together at night, when you’re using red light the contrast remains clear against blue water and green vegetation. So the red-brown color identifies all relief features and cultural features, not water, vegetation, or roads alone.