What color must a vehicle’s high beam light be?
Lighting
Explanation
The **high beam**, also known as the **main beam**, is an essential light in vehicles for illuminating long distances on the road. This light is **white** in color and is mandatory for all automobiles, although optional for mopeds. Its main function is to provide adequate visibility on roads outside urban areas, especially in low natural light conditions or poorly lit tunnels.

The choice of white color for this light is important because it offers clear and powerful illumination, which helps drivers see the road ahead better. However, due to its intensity, it can dazzle other drivers, so it should be used with caution.
Therefore, the correct answer is that the high beam must be **white** in color.
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