What must you remember when you see this traffic sign?

This traffic sign is a German supplementary plate indicating that street lighting in the area does not stay on all night. It serves as a warning for drivers to be extra cautious during the dark hours because the road may be less visible without continuous lighting. This means you should adjust your driving speed and be more alert to potential hazards when street lighting is off. The sign does not imply any parking regulations or permissions; it only informs about lighting conditions at night. Understanding this helps you anticipate changes in visibility and drive safely even in poorly lit areas.