A bollard (English term: guard post) is a technical term in the field of highway traffic science and technology, officially defined in 1996. Classified as traffic safety equipment, bollards fall into two categories-fixed and movable-and are frequently affixed with reflective sheeting. They are suitable for a wide variety of settings, including road entrances and exits, residential communities, parking lots, and construction zones. In practical application, the stability of bollards can be enhanced through the scientific adjustment of spacing and the implementation of concrete reinforcement; furthermore, the use of bollards made from highly reflective materials or those incorporating internal spring-loaded, self-righting mechanisms can effectively elevate overall levels of road safety.
Bollards are primarily classified into two types: fixed and removable.
Fixed bollards are installed permanently and are typically deployed in areas requiring permanent physical separation or visual warning. Removable bollards, conversely, are equipped with locking mechanisms that allow for installation and removal as needed, making them suitable for locations requiring temporary access control.
Structurally, they typically consist of seamless steel tubing and a base flange. Their surfaces are treated either through high-pressure spray coating or by applying engineering-grade reflective film (in yellow-and-black or red-and-white patterns) to enhance visibility.
