Security Bollard Buying Guide: Fixed, Retractable & Automatic — What Does Your Site Need?

Vehicle-borne threats have become a serious concern for security planners worldwide, and Bangladesh is no exception. Whether you manage a bank headquarters in Gulshan, a government office complex in Agargaon, or an industrial facility in a BEPZA zone, controlling vehicle access to your premises is now a foundational security requirement.

Security bollards — the cylindrical steel posts installed at building entrances, pedestrian zones, and sensitive perimeters — are one of the most effective vehicle access control tools available. But choosing the right type for your site requires understanding the different categories of bollard, their crash-test ratings, spacing requirements, and how they integrate with your broader access control system.

This guide gives you a complete framework for bollard selection, specification, and deployment in a Bangladeshi commercial context.

Why Bollards? Understanding the Vehicle Threat

Before specifying any bollard, you need to understand what you are protecting against. There are two principal vehicle threats:

Deliberate vehicle-ramming attacks: An attacker intentionally drives a vehicle into a building, crowd, or protected asset. Vehicles used in attacks range from saloon cars to heavy goods vehicles.

Accidental vehicle incursion: A driver loses control, misjudges a turn, or reverses without adequate visibility. This is a much more common scenario and causes significant property and personal injury across Bangladesh every year.

Both threats are addressed by the same bollard infrastructure, but the specification level differs. A site facing deliberate high-speed attack needs a crash-rated bollard with certification to ASTM F2656 or PAS 68. A site primarily concerned with accidental vehicle incursion can use visual deterrent bollards that are not crash-rated but provide an effective physical barrier against the most common scenarios.

Be honest with yourself about your threat profile. Over-specifying can waste significant budget. Under-specifying against a credible threat creates a dangerous false sense of security.

Category 1: Fixed Bollards

Fixed bollards are permanently mounted in concrete foundations. Once installed, they do not move. They are the most cost-effective and lowest-maintenance option for any location where vehicle access is permanently prohibited.

Construction and Materials

Standard fixed security bollards are constructed from 114 mm or 168 mm diameter steel tube, hot-dip galvanised for corrosion resistance, with a wall thickness of 5 mm or greater. Architectural finish options include powder coating, stainless steel cladding, and decorative covers that integrate with urban landscaping. Many manufacturers offer bollard covers in granite, timber, and other materials that blend with building facades.

The foundation depth for a fixed bollard typically ranges from 600 mm to 900 mm, with a concrete surround of minimum 300 mm diameter. The foundation specification depends on the load the bollard must resist and the ground conditions. Sandy or loose soil requires a deeper or wider foundation than solid concrete sub-base.

Applications in Bangladesh

Fixed bollards are appropriate for:

• Pedestrian plazas and footpaths adjacent to vehicle roads
• Building frontages where no vehicle access is ever needed
• Utility room and service area perimeters
• Public spaces outside government buildings

A practical deployment example: a row of fixed bollards along the pavement frontage of a bank branch prevents vehicles from mounting the kerb and reaching the building facade, while allowing normal pedestrian access between the bollards.

Category 2: Removable and Surface-Mounted Bollards

Removable bollards provide a middle ground between the permanence of fixed bollards and the complexity of automatic rising bollards. They are anchored in a ground socket and can be lifted out and stored when vehicle access is required.

How Removable Bollards Work

The ground socket — a steel sleeve cast into the concrete — accepts the bollard body. A locking mechanism (key, padlock, or quarter-turn system) secures the bollard in the upright position. To permit vehicle access, an authorised person unlocks the bollard, lifts it out of the socket, and stores it nearby. When access is no longer required, the bollard is replaced and locked.

Removable bollards are practical for locations where vehicle access is infrequent — perhaps a weekly delivery, an occasional event, or emergency access. They are not suitable where vehicles need access multiple times per day, because the manual process creates an operational burden and a security risk (bollards are often left out when they should be in).

Surface-Mounted Bollards

Some removable bollards use a surface-mount base plate bolted to the existing surface rather than a cast-in socket. Surface mounting is faster to install and suitable for renovation projects where breaking up existing concrete is prohibitive. However, surface-mounted bollards offer lower resistance than in-ground installations because the anchor bolts are the only connection between the bollard and the structure.

Category 3: Automatic Rising Bollards

Automatic rising bollards are the premium option for high-traffic or high-security access control points. They rise from a flush ground housing to a height of 600–900 mm and retract back to ground level on command, allowing authorised vehicles to pass. The entire cycle typically takes 3–5 seconds.

Drive Mechanisms

Hydraulic: Uses a hydraulic actuator powered by an electric pump. Hydraulic bollards offer the highest cycle speed and the best crash resistance. They are the standard choice for high-security sites and for crash-rated automatic installations. Hydraulic systems require periodic fluid maintenance and are more expensive to install and service than electro-mechanical alternatives.

Electro-Mechanical: Uses an electric motor and lead-screw or rack-and-pinion mechanism. Electro-mechanical bollards are generally slower (5–8 seconds cycle) but require less maintenance than hydraulic systems. They are well-suited for corporate campuses, hotels, and parking facilities where security requirements are moderate.

Pneumatic: Uses compressed air as the actuator. Less common than hydraulic or electro-mechanical; typically seen in specialised applications where hydraulic fluid contamination is a concern.

ASTM F2656 Crash Test Ratings

For any automatic bollard intended to stop a vehicle attack, crash-test certification is essential. The ASTM F2656 standard (American Society for Testing and Materials) is the most widely referenced international standard for vehicle security barriers.

ASTM F2656 rates barriers by vehicle weight and impact speed:

• M30 (P1): 6,800 kg vehicle at 48 km/h (30 mph), maximum penetration 1 metre
• M40 (P1): 6,800 kg vehicle at 64 km/h (40 mph), maximum penetration 1 metre
• M50 (P1): 6,800 kg vehicle at 80 km/h (50 mph), maximum penetration 1 metre

An M50/P1 bollard stops a 6.8-tonne truck travelling at 80 km/h with the vehicle penetrating no more than 1 metre beyond the barrier line. This is the gold standard for embassy perimeters, central bank buildings, and critical national infrastructure.

For most commercial sites in Bangladesh — office buildings, hotels, shopping centres — an M40/P1 rated bollard provides a high level of protection against credible vehicle threats at a more manageable cost. M30 ratings are appropriate for sites facing lower threat levels.

Do not accept a vendor's claims about crash resistance without seeing the certified test certificate from an accredited test laboratory. Self-certified or uncertified "crash-rated" products are not a reliable substitute.

Spacing Requirements: The Critical Parameter

Bollard spacing determines whether your installation actually stops a vehicle. A line of bollards spaced 3 metres apart stops nothing — a vehicle simply drives between them. The gap between bollard centres must be smaller than the width of the minimum vehicle you need to stop.

The industry standard for vehicle-stopping bollard spacing is 1.2–1.5 metres centre-to-centre. This gap is too narrow for a car (minimum width approximately 1.7 metres) but wide enough for pedestrians and cyclists to pass freely.

For sites where the threat includes motorcycles or bicycles being used as vehicle-borne IED (improvised explosive device) platforms, spacing should be reduced to 1.0 metre centre-to-centre. At this spacing, a standard motorcycle cannot pass between bollards.

Every access opening in a bollard line — for authorised vehicles — must be protected by at minimum one automatic rising bollard. The static bollards on either side of the access opening define the clear width of the vehicle lane, which should be no wider than required for a single vehicle lane (typically 3.0–3.5 metres for a car and up to 4.5 metres for a large lorry if needed).

Integration with Access Control and ANPR

Automatic bollards become significantly more powerful when integrated with your access control system and Automatic Number Plate Recognition (ANPR) cameras.

Access Control Integration

An automatic bollard is controlled by a relay input — the same signal used to release an electric door strike. Your access control system sends a relay signal to the bollard controller when an authorised credential is presented. The bollard lowers, the vehicle passes, and the bollard rises again. From the access control system's perspective, a bollard and a door are functionally equivalent.

Supported credential types include:

• ANPR: Camera reads the vehicle number plate, software matches it against an authorised list, and the bollard activates automatically
• Proximity card / fob: Driver presents a card or fob to a reader at the vehicle window
• PIN entry: Driver enters a code on a keypad
• Remote control: Issued to authorised personnel or security officers
• Intercom authorisation: Security guard at a control room releases the bollard after verifying the vehicle

For bank head offices and government buildings in Bangladesh, ANPR integration is increasingly standard. The system logs every plate that is read, whether authorised or not, creating an audit trail that supports incident investigation.

Fail-Safe vs. Fail-Secure Configuration

In a power failure, the bollard system must default to a known state. Fail-safe means the bollard lowers on power loss — maintaining vehicle access for emergency vehicles but compromising security. Fail-secure means the bollard stays raised on power loss — maintaining security but potentially blocking emergency access.

Most security specifications require fail-secure for primary protection bollards, with a manual override key available to security staff for emergency situations. Specify an uninterruptible power supply (UPS) for the bollard controller to handle brief power interruptions without triggering fail-state behaviour.

Bangladesh Commercial Property Applications

Automatic rising bollards have been deployed at a growing number of high-profile sites in Bangladesh:

Banking Sector: Major commercial banks, particularly those with street-level branch locations in dense urban areas, are installing automatic bollards at vehicle approaches to buildings. The Bangladesh Bank's physical security guidelines encourage perimeter hardening at branch offices.

Diplomatic and Embassy Sites: All diplomatic missions in Dhaka maintain high-specification perimeter security including crash-rated bollards. These installations typically meet M50/P1 standards.

Premium Office Towers: Grade-A office towers in Gulshan and Banani are specifying automatic bollards at car park entrances and pedestrian plaza frontages to meet tenant security expectations and building insurance requirements.

Hotels: International hotel chains operating in Dhaka deploy bollard systems at driveway entrances integrated with ANPR, allowing verified guest vehicles through while maintaining control of the vehicle approach.

Industrial and BEPZA Zones: Export processing zones and industrial parks use automatic bollards at factory gates, reducing staffing requirements while maintaining precise vehicle access records for compliance with BEPZA zone regulations.

Total Cost of Ownership

When comparing bollard options, look beyond the purchase price:

For a high-traffic access point where a guard would otherwise manually check vehicles, an automatic bollard with ANPR integration pays for itself within 2–3 years through reduced manning costs alone.

Get Expert Help

SSAL designs and installs complete vehicle access control solutions for commercial, government, and industrial clients across Bangladesh. We specify and supply the full range — from fixed architectural bollards for pedestrian frontages to M50-rated automatic systems for high-security perimeters — and integrate every solution with your existing access control infrastructure.

Get Free Consultation — talk to our physical security team about your site's vehicle access control requirements. We provide site surveys, crash-risk assessments, and complete installation services.