A bollard is a short, sturdy post placed along streets, sidewalks, or parking areas to control traffic, protect pedestrians, or prevent vehicles from entering restricted zones. Bollards can be made of materials like metal, concrete, or plastic and are often used to block vehicles from driving in areas where they should not be, such as near buildings, parks, or pedestrian walkways. They can also be used to protect outdoor spaces from accidental vehicle damage and are sometimes designed to be decorative, adding to the aesthetic of an area while serving a practical safety function.

英語での「bollard」の定義と意味

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