Which sign indicates the maximum headroom under a bridge or tunnel?

Which sign indicates the maximum headroom under a bridge or tunnel?

• A. Height restriction
• B. Narrow road
• C. One-way
• D. Pedestrian zone

Answer: (A)

Understanding signs that control clearance under bridges and tunnels is key here. The height restriction sign communicates the maximum headroom allowed for vehicles to pass safely. It shows a height limit (in metres), so drivers of tall vehicles know whether they can continue or must detour. If your vehicle’s height exceeds that limit, you should not proceed to avoid hitting the bridge or tunnel. The other signs point to different conditions: a sign for a narrow road warns of reduced width, a one-way sign indicates traffic direction, and a pedestrian zone marks an area where pedestrians have priority and vehicles may be restricted. None of these convey vertical clearance, so they don’t indicate headroom.

Understanding signs that control clearance under bridges and tunnels is key here. The height restriction sign communicates the maximum headroom allowed for vehicles to pass safely. It shows a height limit (in metres), so drivers of tall vehicles know whether they can continue or must detour. If your vehicle’s height exceeds that limit, you should not proceed to avoid hitting the bridge or tunnel.

The other signs point to different conditions: a sign for a narrow road warns of reduced width, a one-way sign indicates traffic direction, and a pedestrian zone marks an area where pedestrians have priority and vehicles may be restricted. None of these convey vertical clearance, so they don’t indicate headroom.