RS Security Co., Ltd.
Automatic Bollards can raise or lower on command in 3 to 5 seconds. The Automatic bollards we use are Pneumatic, Hydraulic, and Electronic Piston Drive Systems.
A Bollard is a sturdy, short, vertical post. Although it originally described a post on a ship or .... be lowered entirely below the road surface (generally using an electric or hydraulic mechanism) to enable traffic to pass, or raised to block traffic.