What does this traffic sign indicate?

• It indicates a merging lane from the left.
• It warns drivers of a hazard or danger present on the left side of the road.
  Explanation:

  "This sign is typically used to alert drivers to potential dangers such as roadwork, obstacles on the road, or areas where animals might enter the road from the left. It's important for drivers to slow down and proceed with caution upon seeing this sign."
• It signals a rest area to the left.
• It warns of a school zone ahead.