As shown in the picture, in case of fire or other emergencies in a tunnel, drivers should follow these signs to drive into the opposite tunnel or another safe passage to evacuate.

ANSWER · A

When a fire occurs in a tunnel, evacuate per the nearest evacuation signs. The sign in the picture is a horizontal tunnel indication sign, used to evacuate vehicles and ensure safe passage. The horizontal tunnel's main function is to allow vehicles to transfer to another tunnel for evacuation in case of an accident.

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