noun
pylon
Refers to a tall structure used to support power lines, bridges, or as a marker. In Japanese, often used for traffic cones as well (see sense 2).
道路工事の現場にオレンジ色のパイロンが置かれていた。
Orange pylons were placed at the road construction site.
noun
Specifically a traffic cone; often used interchangeably with カラーコーン. The cross-reference highlights this common usage.
See also: カラーコーン
駐車場の入り口にパイロンを立てて通行止めにした。
We put up traffic cones at the parking lot entrance to block it off.