This sign means?
- Narrow structure ahead, often a bridge ✓
- Sharp bend in the road
- Pavement ends
- Railway crossing
Answer: A. Narrow structure ahead, often a bridge
The sign means there is a narrow structure ahead, often a bridge.
Why this is the answer
The handbook's warning-sign list pairs "narrow structure ahead" with "often a bridge." Warning signs warn of possible hazards ahead, so this sign tells you that a narrow structure, commonly a bridge, is coming up. The same list gives sharp curves their own separate warning, so the narrow-structure meaning is the one that matches this sign.
Why the other answers are wrong
- B. Sharp bend in the road — The handbook lists sharp curve ahead as its own warning sign, separate from the narrow structure warning, so this sign is not the sharp-bend sign.
- C. Pavement ends — The provided passages do not give "pavement ends" as the meaning of this warning sign; the narrow structure message is the one listed.
- D. Railway crossing — Railway crossings have their own advance warning signs and clues described separately, not the narrow-structure warning.
Remember it
Link the phrase "narrow structure" directly with "often a bridge"; that pairing is the clue.