Security bollards are physical barriers designed to provide security and protect people, buildings, and infrastructure from unauthorized access, vehicle attacks, or other security threats. Here are some common functions and purposes of security bollards:

1，Perimeter Protection: Security bollards are often used to establish a clear boundary and secure the perimeter of a property or restricted area. They can help prevent unauthorized vehicles or individuals from breaching a secure area.

2，Vehicle Mitigation: Bollards serve as a defense against vehicle-based threats, such as ramming attacks or unauthorized vehicular access. They can withstand the impact of a vehicle and prevent or minimize damage to the protected area.

3，Pedestrian Safety: Bollards can be strategically placed to separate vehicle and pedestrian traffic, creating safer pathways for pedestrians. They can guide foot traffic and help prevent accidents or collisions.

4，Access Control: By strategically placing bollards, access points can be controlled and restricted. They can be used to regulate vehicular or pedestrian flow, allowing authorized entry while denying access to unauthorized individuals or vehicles.

5，Visual Deterrence: The presence of security bollards acts as a visual deterrent, deterring potential threats or criminal activities. They signal that security measures are in place and can discourage unauthorized individuals from attempting to breach the protected area.

6，Event Security: Bollards are commonly used in public spaces or during special events to enhance security measures. They can be deployed temporarily to secure areas with a higher risk of attacks or to manage crowd control.

7，Building Protection: Security bollards can safeguard buildings from accidental or intentional damage caused by vehicles. They can protect entrances, storefronts, and other vulnerable areas by creating a physical barrier.

8，Anti-Terrorism Measures: In high-security areas, such as government buildings or critical infrastructure, security bollards play a crucial role in anti-terrorism strategies. They provide a layer of protection against potential terrorist attacks involving vehicles.

9，Customization and Aesthetics: Security bollards come in various designs and materials, allowing for customization to match the architectural style and aesthetic requirements of a specific location. This ensures that security measures blend seamlessly with the surroundings.

It's important to note that the specific functions and capabilities of security bollards may vary depending on their design, strength, installation method, and intended purpose. Different types of bollards, such as fixed, removable, or automatic, offer varying levels of security and operational flexibility.