When climbing up hill, which colored lights should be used?

• A. Red
• B. Amber
• C. White
• D. Blue

Answer: (B)

When moving in low light, you want a light that lets you see the terrain without overloading your eyes. Amber light is ideal because its warm color minimizes glare and helps preserve your night vision, letting you notice rocks, steps, and uneven ground on a hillside more clearly. Bright white light can be too harsh and wash out subtle features, while red light, though it preserves night adaptation, doesn’t illuminate the slope well enough for safe ascent. Blue light is not practical for outdoor visibility and can be confusing to others. So amber provides a good balance of visibility and night-vision preservation for climbing uphill.