What does this sign mean?

Road sign: Series of bumps or hollows ahead
  1. Series of rumble strips ahead.
  2. Road works ahead.
  3. Series of bumps or hollows ahead.
  4. Steep hills ahead.

Correct Answer

Series of bumps or hollows ahead.

Explanation: This sign gives advance warning of a series of bumps or hollows ahead. Be prepared to reduce your speed as necessary.

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