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New to Bollards?  Read below to discover how bollards are categorized.

Automatic Bollards: Automatic Bollards are 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:  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:  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:  Fixed bollards are not removable and are bolted down to a concrete slab or poured in place with concrete.
Removable Bollards:  Removable bollards are like a fixed bollard except they can be unlocked, lifted out and carried away.

Stainless Steel Bollards -Automatic, Semi-Automatic, Manual, Removable and Fixed           K4 Crash Rated Automatic Bollard Automatic Pneumatic Bollard Semi-Automatic Bollard Removable Bollard In-ground Fixed Bollard In-ground Fixed Bollard Bolt-down Manual Retractable Bollard   Barrier Gates -Automatic and Manual             BTSW 612 Barrier 6 to 12 ft Arm BTSW 818 Barrier 8 to18 ft Arm MB 824 Barrier 8 to 32 ft Arm  Warning Signs for Manual Barriers Solar Gate Markers    More about Bollards Internally illuminated traffic bollards used in the UK Bollards are rigid posts that can be arranged in a line to close a road or path to vehicles above a certain width and to separate traffic from pedestrians. Internally illuminated traffic bollard used in Rome, Bollards can be mounted near enough to each other that they block ordinary cars, for instance, but wide enough to permit special-purpose vehicles through. Bollards can be used to enclose car-free zones: Removable bollards allow access for service and emergency vehicles. Tall (1.15 meter/4 foot) slim (10 cm/4 inch) fluorescent red or orange plastic bollards with reflective tape and removable heavy rubber bases are frequently used in road traffic control where traffic cones would be inappropriate due to their width and ease of movement. Also referred to as delineators, the bases are usually made from recycled plastic, and can be easily glued to the road surface to resist movement following minor impacts from passing traffic. Sometimes called "T-top bollards" from the T-bar moulded into the top for tying tape, the bollard is an economical, cost effective, and safe delineation system designed especially for motorways and busy arterial roads. In conjunction with plastic tape, it is also effective in pedestrian control. This use of bollard as "chiefly British", although the term has crept into the jargon of some American universities where dense traffic necessitates the use of bollards for access control.

Movable bollards

A rising traffic bollard

Bollards are frequently used to direct traffic around a traffic island. A recent development is the "rising bollard" - a bollard that can be lowered entirely below the road surface to enable traffic to pass, or raised to block traffic. Rising bollards are used to secure sensitive areas from attack, or 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, and are also used to prevent Ram-raiding.

Manually retractable bollard at Battery Park.

A "manually retractable bollard", however is lowered by a key mechanism. A retractable bollard is a short post which can be lowered, either manually or automatically, 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 and especially for reconstruction projects since they do not require retrofitting into existing landscapes, or any electrical hookups or hydraulic systems. Similar systems, using bollards that are hinged at ground level, and fold flat allowing vehicles to drive over them, 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.
Other Bollard uses

Bollards 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 bollard shape, but brightly painted to resemble human figures. Such figures - which may be historical or contemporary, particular or generic - 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.

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