Manufacturer of Traffic Control Barricade Systems. Bollards and Bollard Vehicle Barriers for Access Security 

Stainless Steel Bollards. -Automatic, Semi-Automatic, Manual, Removable and Fixed. K4 Crash Rated Fully  Automatic Bollard Fully Automatic Pneumatic Powered Bollard Semi Automatic Actuator assisted Bollard Removable Bollard in the ground Fixed Bollard poured in place Fixed Bollard Bolt down Manual hand lifted 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 how bollards are used in practice in different applications around traffic and roadways. Internally illuminated traffic bollards used in the UK. 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. 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. 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. Also removable heavy rubber bases are frequently used in road traffic control. Traffic cones would be inappropriate due to their width and ease of movement. 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. The plastic tape is also effective in pedestrian control. This use of "chiefly British", although the term has crept into the jargon of some American universities where dense traffic necessitates the use for access control.

More about different types Movable and Automatic Bollards with their uses around traffic and roadways.

A rising traffic bollard.

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.

Manually retractable at Battery Park.

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.
Other uses:

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

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