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A road sign is readable during the day but unclear at night. What is the most suitable solution to improve its visual communication?

Answer and explanation

Correct answer: Use reflective material and high contrast

The governing concept is visibility under the actual conditions of use. At night, headlights or other available light must make the sign’s message stand out, so reflective material helps return light toward the driver and high contrast separates letters from the background. Adding words increases reading demand, an artistic font reduces legibility, and a decorative background adds distraction. Therefore, option D is the most suitable solution.

Related tags

Road SignsVisibilityContrastReflective MaterialVisual CommunicationCommunication Skills IArtificial IntelligenceClass 9 Mcq

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