FAQs

A height-restriction barrier (also known as a height limit barrier or car-park restrictor) is a steel structure designed to control vehicle access by restricting the maximum height that can pass through an entrance or roadway.

In most cases, height barriers are used to prevent tall vehicles, such as vans, HGVs or caravans, from entering car parks, retail sites, industrial estates, and restricted zones.

At Aremco Barriers, every UK-manufactured height-restriction barrier is built from heavy-duty galvanised steel, ensuring long-term durability, corrosion resistance, and reliable protection in all weather conditions.

There are two main types:

• Fixed height barriers, which are permanently set to a specified clearance height (e.g. 2.1 m or 2.4 m).
• Swing or hinged height barriers, which allow authorised access for higher vehicles when unlocked and opened.

Height-restriction barriers can be surface-mounted or built-in, with reflective height signs for visibility and powder-coated finishes in any RAL colour (typically RAL 1021 yellow or RAL 6005 green).

By clearly defining entry limits, these barriers enhance car-park safety, prevent damage to overhead structures, and improve traffic management while maintaining a professional, organised appearance.

The typical clearance height for a car park height-restriction barrier in the UK is usually between 2.0 metres and 2.2 metres, depending on the site layout and the types of vehicles permitted.

For standard car parks, 2.1 m is considered the industry norm, as it allows access for cars, 4x4s, and small vans while preventing entry of high-roof commercial vehicles, motorhomes, or HGVs.

At Aremco Barriers, all UK-manufactured height-restriction barriers are built to your exact specifications — whether you require a fixed-height restrictor for permanent vehicle control or an adjustable or swing barrier for flexible access.

We can fabricate custom clearance heights from 1.9 m up to 5.5 m, ensuring full compliance with local authority guidelines and car-park design standards. Optional reflective aluminium height signs (RA1 or RA2 grade) clearly display the maximum clearance to prevent accidental strikes.

Each unit is galvanised for corrosion resistance, powder-coated in any RAL colour, and designed for long-term reliability in public, commercial, and industrial environments.

To determine the correct height restriction for your site, start by assessing the tallest vehicle you want to allow entry and the types you want to exclude.

For most public and private car parks, the standard clearance height is 2.0 – 2.2 metres — ideal for cars, SUVs, and small vans, but low enough to block high-roof commercial vehicles, HGVs, and caravans.

If your site requires occasional access for taller vehicles (e.g. delivery lorries, maintenance vans or emergency services), consider an adjustable or swing-opening height-restriction barrier. This allows you to lock the barrier in place for daily use, but open it safely when authorised access is needed.

At Aremco Barriers, all UK-manufactured height-restriction barriers are custom-built to order. We help you calculate the most suitable clearance based on vehicle types, ground gradient, approach angle, and sign placement.

Each barrier is hot-dip galvanised for corrosion protection, powder-coated in any RAL colour, and fitted with reflective aluminium height signage for visibility and compliance. The result: a barrier that’s perfectly matched to your site’s traffic flow, safety requirements, and operational needs.

There are several main types of height-restriction barriers, each designed for different car park, industrial, or commercial applications depending on the level of security and access control required.

1. Fixed Height Barriers – Permanent installations that provide a constant clearance height (typically 2.0–2.2 m). Ideal for standard car parks and sites where tall vehicles must always be restricted.
2. Swing-Arm or Hinged Barriers – Feature a pivoting top beam that can be unlocked and swung open for authorised access. Perfect for sites needing occasional entry for maintenance or delivery vehicles.
3. Removable Height Barriers – Built to be lifted out or detached completely for temporary access. Often used at seasonal sites or maintenance zones.
4. Automatic or Rising Height Barriers – Electrically or hydraulically operated for quick access control, frequently used in high-security or multi-level car parks.
5. Adjustable Barriers – Allow on-site changes to clearance height to match varying vehicle types or site conditions.

All Aremco Barriers height-restriction systems are UK-manufactured from heavy-duty galvanised steel, supplied with reflective height signage and powder-coated finishes in any RAL colour.

Whether you need a fixed restrictor, swing-arm design, or custom automatic barrier, we can engineer a reliable, long-life solution to improve car park safety, traffic management, and vehicle access control.

The materials, finishes, and visibility features you choose have a major impact on the performance, longevity, and safety of your height-restriction barrier.

At Aremco Barriers, all our UK-manufactured height barriers are built from heavy-duty galvanised steel, ensuring excellent strength, corrosion resistance, and impact durability in outdoor conditions.

After galvanising, barriers are powder-coated for added weather protection and a smart, professional appearance. Powder coating also allows full colour customisation in any RAL shade — with popular options including:

• RAL 1021 Traffic Yellow for high visibility
• RAL 9005 Black for industrial or retail car parks
• RAL 6005 Green for landscaped or rural environments

For maximum visibility and safety, every barrier can be fitted with reflective aluminium height signs (RA1 or RA2 grade), contrasting colour bands, or chevron markings to alert approaching drivers both day and night.

These combined features ensure each barrier remains durable, low-maintenance, and clearly visible, meeting UK car-park and highway safety standards while maintaining a professional finish that complements your site.

Yes — there are several UK regulations and best-practice standards that apply to height-restriction barriers installed in public and private car parks.

Under the Health & Safety at Work Act 1974 and the Workplace (Health, Safety and Welfare) Regulations 1992, duty holders must ensure that all structures, barriers and signage are safe, clearly visible and properly maintained.

According to UK Department for Transport guidance, the maximum permitted vehicle height must be displayed at the approach to and on the barrier itself. Height signs should:

• Use both metric and imperial units (e.g. 2.1 m / 6 ft 10 in).
• Be reflective (RA1 or RA2 grade) for visibility in all lighting conditions.
• Be positioned at driver eye-level and at any secondary approach routes.

While there is no single law specifying the barrier structure itself, installations should follow relevant BS EN standards for materials and impact loading — such as BS EN 1991 (structural loads) and BS 8300 (inclusive access).

At Aremco Barriers, all UK-manufactured height-restriction systems are designed and supplied with compliant reflective signage and clear metric / imperial markings, helping car-park operators meet health & safety duties and accessibility standards with confidence.

Installing a height-restriction barrier in a car park provides multiple practical and safety benefits — from preventing vehicle damage to improving traffic management and enhancing site security.

1. Damage Prevention – Stops high vehicles, vans, or motorhomes from entering areas with low ceilings, canopies, or overhead structures, reducing costly property and vehicle damage.
2. Access Control – Allows only permitted vehicles to enter, improving site safety and protecting restricted areas. Swing-arm or locking height barriers can be opened for authorised access when needed.
3. Traffic Management – Helps organise vehicle flow and prevent congestion, especially in multi-level, retail, or commercial car parks.
4. Security & Deterrence – Discourages unauthorised overnight parking, fly-tipping, or anti-social vehicle access, keeping car parks secure after hours.
5. Compliance & Visibility – With reflective signage, dual metric/imperial height markings, and RAL-coloured powder-coated finishes, barriers meet UK health and safety standards while remaining clearly visible day or night.

At Aremco Barriers, our UK-made height-restriction barriers are built from galvanised steel, ensuring long-term corrosion resistance, strength, and reliability. Each unit combines durability, access control, and visual deterrence to make your car park safer, more organised, and fully compliant.

The cost of a height-restriction barrier in the UK depends on its size, material, finish, and installation requirements.

On average:

• Standard fixed height barriers start from around £950 – £1,300, depending on width and finish.
• Swing-arm or hinged models usually range between £1,200 – £2,000.
• Extra-wide, removable, or bespoke designs may cost more depending on custom specifications and site conditions.

Several key factors influence the final price:

1. Barrier width and clearance height – wider spans and higher clearances require more steel and reinforcement.
2. Finish and colour – galvanised-only finishes are more economical; adding RAL powder-coating or reflective height signage increases cost but improves durability and visibility.
3. Custom features – swing-arm mechanisms, locking posts, or removable ground sleeves affect fabrication time and material cost.
4. Installation type – built-in barriers (concreted posts) generally cost less to install than surface-mounted or removable systems that need specialist fittings.

At Aremco Barriers, all UK-manufactured height-restriction barriers are custom-made to order using heavy-duty galvanised steel for long-term corrosion resistance. Each project is priced individually based on dimensions, finish, and delivery location, ensuring the best value for a fully compliant, professional installation that’s built to last.

Yes — all Aremco Barriers height-restriction barriers are fully custom-made in the UK and can be tailored to your exact site dimensions, colour scheme, and security requirements.

Customisation options include:

1. Height & Width – Built to any clearance height (typically 1.9 m – 5.5 m) and span width (up to 10 m between posts) to suit your vehicle access points.
2. Opening Width – Single-leaf or double-leaf swing-arm barriers can be manufactured to open fully or partially depending on access needs.
3. Finish & Colour – Choose from hot-dip galvanised, powder-coated, or dual-finish options in any RAL colour to match your brand or surroundings.
4. Locking Systems – Select from padlock and hasp, removable post locks, or key-operated locking mechanisms for controlled access.
5. Signage & Visibility – Add RA1/RA2 reflective height signs, branding decals, or contrast colour bands for improved visibility and presentation.

Every Aremco height barrier is engineered to order from heavy-duty galvanised steel, ensuring strength, corrosion resistance, and a professional appearance that reflects your brand while maintaining complete functionality and safety compliance.

Installing a height-restriction barrier in a car park or industrial site requires careful planning to ensure safety, durability, and long-term performance.

1. Site Survey – Before fabrication, a detailed survey is recommended to measure entry width, clearance height, and surface levels. This ensures the barrier fits precisely and aligns with site access routes.
2. Ground Conditions & Foundations – Each support post should be embedded in concrete to the correct depth (typically 300–500 mm) to provide full stability and impact resistance. Poor or uneven ground may need additional preparation or larger foundation pads.
3. Slope & Gradient – On sloping sites, it’s important to check that the barrier’s cross-beam remains level once installed and that clearance height is consistent across the full width of the opening.
4. Width Span & Clearance – Standard openings range from 3 m to 9 m, but larger spans may require central support posts or reinforced cross-sections to maintain rigidity and reduce flexing.
5. Installation Access & Safety – Ensure there is sufficient working space for equipment, concrete setting time, and safe pedestrian diversion during works.

At Aremco Barriers, all UK-manufactured height-restriction barriers are supplied with full installation guidance, including recommended foundation sizes, bolt-down or built-in options, and site-specific fitting advice. Our experienced team can also assist with on-site surveys to confirm clearances and ensure each barrier is safely and accurately installed.

Regular maintenance and inspection of your height-restriction barrier are essential to ensure safety, visibility, and long-term performance — particularly in busy or outdoor environments such as car parks, industrial estates, and retail sites.

1. Routine Inspections – Visually inspect the barrier every 3–6 months for signs of corrosion, damage, loose fixings, or impact. Check posts, hinges, and locking systems for wear or movement.
2. Cleaning – Wash down the barrier periodically with mild detergent and water to remove road dirt, salt, and debris. This helps preserve the powder-coated finish and maintain a professional appearance.
3. Lubrication & Moving Parts – Apply light lubricant to hinges, swing-arm joints, and locking mechanisms to ensure smooth operation and prevent seizing.
4. Signage Upkeep – Confirm that reflective aluminium height signs (RA1 or RA2) remain visible, legible, and securely fixed. Replace any faded or damaged signage immediately.
5. Surface & Foundation Checks – Look for cracks or movement around concrete foundations, particularly in high-traffic or frost-affected areas.

At Aremco Barriers, all UK-made height-restriction systems are galvanised and powder-coated for minimal maintenance and long-term corrosion protection. With simple periodic checks and cleaning, your barrier can remain safe, functional, and visually effective for 20+ years.

If a vehicle exceeds the stated height limit and strikes a height-restriction barrier, it can cause serious damage to both the vehicle and the barrier structure — and potentially injure the driver or nearby pedestrians.

The main risks include:

1. Vehicle & Structural Damage – Collision with the cross-beam can bend or shear steel components, damage the barrier’s foundations, or cause costly repairs to overhead canopies and property.
2. Safety Hazards – Falling debris or a displaced barrier can create a significant health and safety risk within public car parks or access roads.
3. Operational Disruption – Damaged barriers may block entry routes and cause site downtime or restricted access until repairs are made.

From a liability standpoint, the site operator or property owner has a duty of care under the Health & Safety at Work Act 1974 and Occupiers’ Liability Act 1957 to ensure barriers are clearly marked, visible, and properly maintained.

To reduce risk:

• Install reflective RA1/RA2 signage showing metric and imperial height limits.
• Ensure signs are placed at approach routes and entry points at driver eye level.
• Keep barriers in good condition with routine inspections.

At Aremco Barriers, all UK-manufactured height-restriction systems are supplied with compliant reflective signage, clearance warnings, and robust steel construction to help prevent accidents, minimise liability, and maintain safe vehicle management across commercial and public sites.

Before entering any car park with a height-restriction barrier, it’s essential to know your vehicle’s true height — including roof racks, roof boxes, antennas, or mounted equipment — to avoid collisions and damage.

Here’s how to measure accurately:

1. Park on Level Ground – Ensure the vehicle is on a flat surface for an accurate reading.
2. Measure from the Ground to the Highest Point – Use a tape measure or laser measure from ground level up to the top of the roof rack, roof box, or accessory.
3. Account for Accessories – If you use bike racks, surfboard mounts, flashing beacons, or roof boxes, include their total height — even temporary fittings count.
4. Check the Barrier Signage – Compare your vehicle’s full height with the displayed clearance on the height-restriction barrier sign, shown in both metric and imperial units (e.g. 2.1 m / 6 ft 10 in).
5. Allow a Safety Margin – Leave at least 100 mm (4 inches) of clearance to allow for uneven surfaces, suspension movement, or load shifts.

At Aremco Barriers, all UK-manufactured height-restriction barriers are supplied with accurate reflective signage to help drivers make safe decisions before entering. Clear visibility, proper measurement, and understanding your vehicle’s height are the best ways to prevent accidents, protect property, and avoid liability issues.

When specifying or installing a height-restriction barrier, a few common errors can lead to safety risks, property damage, and compliance issues. Avoiding these mistakes will help ensure reliable long-term performance.

1. Incorrect Height Selection – Setting the clearance too low can restrict normal vehicle access, while too high defeats the purpose of the barrier. The standard UK clearance for most car parks is 2.0 – 2.2 m.
2. Poor or Missing Signage – Inadequate or faded signs cause confusion and collisions. Always fit reflective RA1/RA2 aluminium height signs in both metric and imperial units at the barrier and approach routes.
3. Inadequate Warning Distance – Drivers need early visual warnings. Install advance warning signs before tight entrances, bends, or ramps.
4. Not Considering Larger Vehicles – Service vans, refuse vehicles, or emergency access must be factored in. Consider a swing-arm or removable design for occasional tall-vehicle entry.
5. Improper Installation or Foundations – Shallow or uneven foundations reduce stability and shorten lifespan. Posts should be embedded 300–500 mm into concrete or fixed to pre-levelled pads.

At Aremco Barriers, all UK-made height-restriction barriers are fabricated from heavy-duty galvanised steel and supplied with clear reflective signage and full installation guidance. This ensures every system is fitted correctly, visibly marked, and compliant with UK car-park safety standards — avoiding the costly pitfalls of poor specification or installation.

Height-restriction barriers form a key part of modern access control and parking management systems, helping to regulate vehicle entry while maintaining site security and traffic flow.

In most sites, they’re used alongside automatic gates, rising arm barriers, bollards, or ANPR camera systems to create a layered approach to access control.
Here’s how they integrate effectively:

1. Authorised Vehicle Access – Swing-arm or removable height barriers can be unlocked and opened manually or automatically to allow access for authorised tall vehicles such as delivery vans, maintenance trucks, or emergency services.
2. Locking Systems – Barriers can be fitted with padlock and hasp, key-lock, or electronic locking mechanisms that integrate with car park management software or staff access control systems.
3. Automation & Integration – When combined with ANPR cameras, RFID readers, or smart entry software, barriers can automatically unlock for approved vehicles while restricting unauthorised access.
4. Parking Management Efficiency – Height barriers help segregate vehicle types, reduce misuse of car parks by oversized vehicles, and protect height-limited areas such as undercrofts and multi-storeys.

At Aremco Barriers, all UK-manufactured height-restriction systems can be custom-engineered to integrate with your existing access-control setup. Options include manual, lockable, or automated swing-arm barriers, built from galvanised and powder-coated steel for strength, durability, and seamless compatibility with wider parking-management strategies.