What does this sign indicate?

• You can pass vehicles if you are in a hurry.
• You should only pass vehicles if they are moving very slowly.
• The sign is for information only and does not affect driving behavior.
• Passing is prohibited, and you must stay in your lane behind other vehicles.
  Explanation:

  "Passing is prohibited, and you must stay in your lane behind other vehicles. This sign is typically found in areas where visibility is limited, such as curves or hills, and it's important to follow this rule for everyone's safety on the road."