What has colors, can change them quickly, and is essential for communication, yet has no voice?

Category: Knowledge · Difficulty: expert

Hint: Consider something that directs movement but doesn’t speak.

Answer

A traffic light

Explanation

A traffic light uses colors to control traffic flow, crucial for safety and communication on the road.

This is a expert knowledge riddle — one of the harder riddles here. The answer is A traffic light.

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