Final answer:
The non-illuminated sign shown in the picture is a stop sign. Drivers must come to a complete stop before proceeding further.
Step-by-step explanation:
The non-illuminated sign shown in the picture is commonly known as a stop sign. This sign is used to indicate that drivers must come to a complete stop before proceeding further. It is usually located at intersections and is meant to regulate traffic flow, ensuring safety for all drivers and pedestrians.