防護柵

1. Origins, structure, and basic meaning

• Structure: 防護柵 (ぼうごさく) is a barrier protecting people or roads from hazards. 防護柵が設置される concerns installation; 防護柵を点検する concerns inspection.
• Basic usage: A barrier is installed on a rockfall-prone slope, and a roadside barrier is checked by a worker.

2. Common pitfalls and similar expressions

• Barrier installed at a hazard and barrier maintained
  • Passive subject and active object refer to the same kind of facility. Its safety function distinguishes it from an ordinary decorative or boundary fence.