What does this sign mean?

• This sign guide drivers around the sharp curves in the road.
  Explanation:

  "The road sign indicates that Chevron (arrowhead) signs are posted in groups to guide drivers around sharp curves in the road. These signs are typically placed on the outside of a curve to provide a visual cue for the direction and sharpness of the turn."
• The road ahead is closed.
• The pavement narrows ahead.
• There is a winding road ahead.