What does this sign mean?

• Drivers should prepare to make a sharp left turn.
• The road curves to the right ahead, and drivers should reduce their speed and proceed with caution.
• The road ahead has a series of curves or turns. Drivers should slow down and be cautious.
  Explanation:

  "This sign warns drivers that the road ahead has a series of curves or turns, and they should reduce speed and exercise caution. Such signs are commonly placed on roads with winding sections that can be difficult to navigate at high speeds."
• Drivers must turn left at the upcoming intersection.