IWA 14 Terra Shallow Blocker MKII

The IWA14 Terra Shallow Blocker MKII is the the latest model of HVM Terra Blocker with Shallow Mount Technology, successfully impact tested to the new International IWA 14 specification stopping a 7.2t vehicle travelling at 80kph (50mph). The test resulted in the vehicle being stopped with zero penetration. The Blocker remained fully functional after impact illustrating the outstanding protection the blocker can provide from the threat of VBIED’s (vehicle borne improvised explosive devices).

The Terra Shallow Blocker has quickly become our most popular model of HVM Blocker. As a foundation type B, With an embedment depth of only 300mm required (foundation depth 500mm, foundation type B), the Shallow HVM Blocker offers protection to sites where minimal foundation depths are available due to underground utilities and services.

The footprint and weight has been reduced by approximately 60% from its predecessor. The new shock absorber dampening springs are designed to absorb and damp shock impulses. This specialist system designed by Frontier Pitts converts the kinetic energy of the shock into other forms of energy which are then dissipated.

Simulated to stop 12t@ 80kph, the high carbon struts work on 3 axis and may allow the MKII blocker to be pre tested for energy absorption prior to delivery.

Hydraulically driven. Designed for ease of installation and maintenance. The Blocker can be interfaced to any access control systems. Traffic Light System included as standard.

The Terra Shallow Blockers top plate can be finished with Frontier Pitts Lifetime Paint; an anti skid resistant treatment which has been fully tested under laboratory conditions for at least 12 months.

  • Hydraulically driven
  • Maximum width: 4000mm
  • IWA 14 Tested dimensions: width 3000mm, lift height 1000mm
  • Foundation Type B

The Terra Shallow Blocker is a PSSA Verified product. The Perimeter Security Suppliers Association has introduced a verification scheme to provide confidence to clients of the perimeter security industry and ensure that the associations members conform to internationally recognised quality standards. For more information please click here.

NPSA website

IWA 14 Terra Shallow Blocker MKII 7.2t@50mph Specifications


The IWA 14 Terra Shallow Blocker MKII 7.2t@50mph

    Basic Specs

  • IWA 14 Classification Code: V Retractable Blocker /7200(N2A)/80/90:0.1
  • IWA 14 Tested dimensions: width 3000mm, lift height 1000mm
  • Width: Variable up to 4000mm
  • More details

  • Construction: The blocking segment shall be constructed of heavy steel section with steel front plate and covers
  • Foundation Type B
  • Axle Loadings: 24 tons
  • Finish: Shotblasted, hot zinc sprayed (galvanised), primed and finished with a final coat of polyurethane paint. Client to advise RAL paint number. Alternative finishes available on request. Frontier Pitts Special Lifetime Paint; an anti-slip paint for road vehicles available on request.
  • Options: Accumulator – allows a number of operations in power failure mode, EFO(Extra Fast Operation), Manual Hand pump, High Security Cabinet, Anti-tamper alarms
  • Normal Operating Speed/Time: 4-6 seconds, Depending on configuration
  • EFO Speed: 2-3 seconds, Depending on configuration
  • Duty Cycle: 100% duty rating
  • Durability: Fully functional after IWA 14 impact test
  • Safety: Vehicle Detector Loops, Safety Photocells, LED Traffic light heads, Flashing beacon, Audible alarm
  • Controls: The programmable logic controller (PLC) with built in safety features will accept inputs from access control systems including access card, voice, etc. Push button as supplied as standard
  • Accreditations: Secured by Design, BRE Global

Civil Engineering

Shallow Mount Technology – only 300mm embedment required. Foundation depth 500mm

For more information please contact the Technical Sales Department on

01293 422800 or email:

[email protected]

Electrical Engineering

Industry standard electricals

Electrical Requirements: Three Phase, Depending on configuration

Specifications subject to change and are dependant on product options. Please contact Frontier Pitts to request more information.

Product Video


Photo Gallery




Warning and information signs installed on the barrier boom such as ‘STOP’ ‘NO EXIT’ and ‘NO ENTRY’

Traffic Light System

Standard Traffic Light systems are highly recommended to be installed with all road blocker and bollard systems to advise all users of its position, and are supplied as standard. 100mm LED traffic light head can be pole or mounted on control cabinet

Lights in blockersLights in Blocker

Internal lights within the skirt of the road blocker for better visibility
Traffic light

Traffic Light Cage

Vandal resistant traffic light cages

Totem traffic lightTotem Traffic Light System

Totem Traffic Light systems are optional and an upgrade to the standard Traffic Light system. Traffic Lights are highly recommended to be installed with all road blocker and bollard systems to advise all users of its position.


In the event of a power failure or sabotage, the accumulator can raise and lower the blocker/bollard for a number of predetermined operations. An accumulator is a self contained charged unit with battery backed control system.
Extra Fast Operation

Extra Fast Operation

Increases the products speed of operation to a few seconds. Dependent on configuration. Please contact Technical Sales for more information on 01293 422800
Manual handpump

Manual Handpump

In the event of a power failure, a hand pump/release can be provided to enable the manual raising and lowering of the blocker/bollard.
Hand drill

Hand drill to operate manual hand pump

Hand drill to operate manual hand pump on a Rising Terra Bollard or Terra Blocker.

Vehicle Detector Loops

Vehicle detector loops installed beneath the road surface to detect vehicles. This will prevent the automatic equipment from closing on a vehicle within the aperture. Safety induction loops cut into the road surface. This will prevent the gate from closing on a vehicle within the aperture.

Safety Photocells

Safety Photocells produce beams of light which cross the road way to monitor vehicle and pedestrian movement. If an object breaks this beam, the automatic equipment will stop & reverse. On gate installations, two pairs of photocells are usually fitted. Ultra Sonic Sensors are also available.
High security cabinet

High Security Cabinet

Provides high security protection to the control cabinet of Frontier Pitts PAS 68 Anti Terra product range. Special Security cabinets can be fitted and tested to BRE 1175 with 6 point security locking mechanism and fire resistance to DIN 4102. High security mauer key lock, Class A, ECBS/ENV 1300 approved, with similar rating to BS EN 1143-1 1997.
anti skid paint

Anti Skid Paint

The Terra Blocker’s Top Plate can be fully coated with an anti skid resistant treatment which has been fully tested under laboratory conditions for at least 12 months
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