A security bollard is mainly designed for high security vehicle entrance, expansive powerless areas or complexes and for an area that need to be closed for vehicular traffic at specific times. It is made of a heavy metal chamber worked from a distance by cylinder instrument game plan. When required these can be lowered and raised by command for operation by hydraulic means. A bollard is designed to take an effect of even a heavy truck crashing with it, therefore making it very suitable for high security areas requiring quick blocking of traffic when required. Bollards can be introduced as a single unit as well as in groups as shown in the picture. The principal elements of the bollards are to : Block the route of a gatecrasher during an attack / assault. Restrict the traffic temporarily. Prevent entry of heavy vehicles when required. Secure the routes in high security and helpless areas and complexes. Blog , Facebook , Instagram , YouTube , ...