Drivers wearing sunglasses should remove them before entering a tunnel.

ANSWER · A

When entering a dark place from a bright one, you initially have trouble identifying surroundings. Gradually you can see in the dark and become more sensitive to low light, eventually reaching the best state. This is "dark adaptation." Dark adaptation can cause drivers to suddenly experience temporary visual impairment when entering a tunnel, easily leading to rear-end collisions or running off the road. Remove sunglasses in advance, give the eyes time to adapt, and turn on headlights and slow down to reduce the impact of light changes.

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