What is the purpose of this sign/signal?

• To guide drivers during nighttime by highlighting road alignment changes or hazards.
• To mark obstructions adjacent to the roadway.
  Explanation:

  "This sign or signal is used to indicate obstructions near the roadway, such as barriers, medians, or other fixed objects. It helps drivers stay aware of their surroundings and avoid collisions, especially in areas where the road narrows or curves."
• To warn drivers of a pedestrian crossing ahead.
• To provide directions to the nearest rest area.