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Automatic Bollards:that raise and lower by remote control. Much like a gate operator they include a control panel with an air pump (pneumatic) or electric motor/ gear box (mechanical).
Semi-Automatic Bollards: are pushed down by hand and locked with a key. To raise the bollard, turn the locking key and the bollard will rise without lifting it up.
Manual Bollards: are lowered down by hand and locked with a key. To raise the bollard, turn the locking key and lift the bollard by hand and lock it the up position.
Fixed Bollards: are not removable and are bolted down to a concrete slab or poured in place with concrete.
Removable Bollards: are like a fixed bollard except they can be unlocked, lifted out and carried away.
Plastic Bollards: are like a removable bollard they can be unlocked, lifted out or simply carried away.
More about different types Movable and Automatic Bollards with their uses around traffic and roadways.
are frequently used to direct traffic around a traffic island. A recent development is the "rising bollard" that can be lowered entirely below the road surface. This enables traffic to pass, or raised to block traffic. Rising bollards are used to secure sensitive areas from attack. To enforce traffic rules that are time related or restrict access to particular classes of traffic. They are increasingly common around the world to hinder vehicle based terrorist actions, from achieving close proximity to buildings. They are also used to prevent Ram-raiding.
A "manually retractable bollard", however is lowered by a key mechanism. A retractable is a short post which can be lowered either manually or automatically. They go into the ground when not needed. It is especially useful in a mixed use public space which supports both pedestrian use and emergency and or service vehicle use. This flexible use creates opportunities for vehicular control as well as pedestrian accessibility in a mixed use public space. Manually retractable bollards are appropriate for new projects. Especially for reconstruction projects since they do not require retrofitting into existing landscapes.They don't require any electrical hookups or hydraulic systems. Similar systems that are hinged at ground level, and fold flat allowing vehicles to drive over them. They can be deployed in similar circumstances.
The term "robotic bollards" has been applied to traffic barricades capable
of moving themselves into position on a roadway.
Are also used as a form of permanent utility location.
Decorative bollards are placed in Geelong, Victoria, Australia, to enhance the landscape as a form of outdoor public sculpture. Usually they are made of timber, minimally modified from the traditionally cylindrical, wooden, maritime shape, but brightly painted to resemble human figures. Such figures - which may be historical or contemporary, particular or generic. They are sited singly or in clusters along the waterfront and in other areas where people gather. Decorative bollards have become a well-known feature of the city of Geelong and reflect its history as a major Australian port.
Types of Bollards:bollards,traffic bollards, steel bollards, security bollards, pipe bollards, parking bollards, removable bollards, metal bollards, barricade, traffic stop, collapsible post, removable post, traffic barrier, traffic control barrier