Cách sử dụng
A bollard is a sturdy post or pole that is typically used to block traffic or protect buildings and other structures from vehicles. You might see bollards lining sidewalks or roads, or placed in front of buildings to prevent cars from driving into them. Bollards can be made from a variety of materials, including concrete, metal, and wood. They are an important safety feature in many public spaces, helping to keep pedestrians and buildings safe from harm.