Hostile Vehicle Mitigation – Meridian Crash Barriers

Screen Shot 2018-04-13 at 9.42.10 am

When a requirement arises for Temporary Crash Barriers, the Meridian Crash Barrier systems provide a sensible, efficient, portable mechanism to prevent hostile vehicle intrusions.

The Meridian system has been developed in the USA and used successfully in war-zones such as Afghanistan (Khandahar Airport), Oil and Fuel Refineries, Ports and other locations. It has been tested and confirmed to stop vehicles dead in their tracks travelling at 50km/h.

Here is the final excerpt from the Federal Government’s recommendations on Hostile Vehicle Mitigation – Temporary Barriers. This is precisely when the Meridian system as supplied by AML Risk Management comes into its own.

Re-deployable devices

Re-deployable devices are vehicle security barriers that are kept in storage and can be utilised when there is an increase in the level of threat to a specific location or crowded places generally. These devices are designed solely as protection measures and are generally not customisable.

Meridian Rapid Defense Group           Anti-Vehicle Barriers

There are two significant drawbacks associated with re-deployable HVM devices. The primary disadvantage is the fact that they are intelligence-driven, meaning that they are only effective if the site owner is aware of the threat: they cannot mitigate against a ‘no notice’ attack. A second disadvantage is their utilitarian appearance and consequent inability to respond to the aesthetic requirements of the surrounding environment, although their appearance is less of a concern if they are only operational for short periods of time, as is usually the case.

These drawbacks illustrate the importance of ensuring that permanent fixtures form part of a HVM strategy.

Rapid vehicle deployment barrier

  • Temporary installation
  • No assembly tools required
  • Set up in less than 10 minutes
  • As with permanent barriers, re-deployable barriers should be treated and rated against a recognised standard to resist the impact of the threat vehicle.

Portable barrier-in-a-box

  • Impact tested: 7.5 tonne at 48km/h
  • Temporary or permanent installation
  • Set up in 7 minutes
  • As this barrier is installed to bollards, the distance between them and their impact rating should meet the manufacturer’s specifications

Rapid deployable surface mount

  • Impact tested: 7.5 tonne at 48km/h
  • Short to mid-term installation
  • Deployed at a rate of 1 bollard every 5 minutes

Re-deployable road safety barriers

Road safety barriers such as concrete, steel and plastic water filled jersey barriers are designed to deflect vehicles from leaving the roadway or trafficable lane. These barriers are generally surface mounted and suitable for use as re-deployable traffic calming devices.

Caution must be taken not to use jersey barriers outside of their design specifications.

Improvised vehicle barriers

Vehicles have and continue to be used as improvised vehicle barriers around the world. This type of barrier is an attractive option due to its portability to close accessible gaps on roadways or paths that could be exploited by hostile vehicle attack, or to act as a gate to regulate authorised vehicle entry into a protected zone.

If using vehicles to form part of a barrier system, a comprehensive vehicle dynamics assessment must be conducted to determine suitability. The assessment must consider the size, weight and placement of the barrier vehicle relative to the size, weight and speed of the foreseeable threat (attack vehicle).

img-2

2.02 Every Metre Counts

Achieving a factor of safety

Where possible, barring vehicular access entirely – thus automatically removing threats to the site – is preferable to more elaborate vehicle management designs. This option can also have added operational benefits and reduced risk of accidents or misuse.

In selecting this method, however, consideration should be given to routine and emergency servicing requirements of the asset, as well as surrounding traffic and transport imperatives. The exclusion of traffic from a wide area may increase traffic volumes and congestion in the surrounding local transport network, thus creating a need for wider traffic management plans.

It is important to design barrier systems, both permanent and temporary that clearly define vehicle and pedestrian spaces. Street furniture in accordance with international standards can be used as mitigation, however they should be supplemented with additional traffic calming measures.

Permanent and temporary barrier systems that are not supported with these additional measures as depicted in the photograph(s) only serve to increase the risk to pedestrians in or on the barriers in the event of a vehicle impact.

With all surface mounted barriers, your assessment must also include the predicted penetration distance the barrier and attack vehicle will travel post impact. This distance will inform the factor of safety that is required (space between the barrier line and crowds).

2.03 Vehicle Approaches and Traffic Management Options

Impact angle is measured between the direction of travel of the vehicle and the impact location (between 0-90 degrees).

Owners and operators should consider a variety of traffic management options, including different forms of vehicle approaches.

Even a small reduction in the velocity of a hostile vehicle will have a significant decrease in the amount of energy that vehicle is carrying, thus reducing its impact and permitting less intrusive HVM devices, which may reduce costs.

High speed = high impact = catastrophic result.

A small decrease in speed = a large decrease in energy = reduced impact = less intrusive barriers and possible reduced cost.

There are a variety of traffic management options to help reduce vehicle speed.

Most severe – Head on impact

This impact mode is usually the most severe. The vehicle is fully engaged and the resultant momentum generated by the mass and speed of the vehicle is directed towards the point of impact.

Less severe – Angled impact

This impact mode is less severe than a head-on approach. The angle typically leads to speed loss by redirection of the vehicle.

Least severe – ‘In-turn’ impact

This mode is the least severe.

Lateral acceleration forces inhibit the capability of a vehicle to maintain or increase speed during a turn in.

Longitudinal deflections

Horizontal deflections, such as bends or chicanes, are often employed in urban or residential areas to encourage drivers to slow down. Drivers reduce vehicle speed in order to maintain ride comfort while making the required direction change; this, in turn, results in improved road user safety.

Longitudinal deflections can also be used to limit the maximum speed of a vehicle operated by a determined driver.

Well-designed temporary chicanes can help to slow vehicles in the lead up to a special event area.

Remember: always use barriers within their design specification.

Vertical deflections

Vertical deflections such as road humps, speed cushions and rumble strips are often employed as a visual deterrent and to disrupt ride comfort, encouraging road users to reduce speed. These,
however, typically provide negligible deterrent or speed reduction against a determined hostile vehicle attack.

Inclines

Gradient will affect the ability of a hostile vehicle to maintain speed or accelerate toward an asset, especially for larger, heavier vehicles. Steep inclines may also be used to restrict the line of sight along a potential attack route, thus introducing an element of uncertainty to the attacker.

Use of inclines will require a large amount of physical space so may not be an option unless there is natural incline available in the surrounding topography.

img-1

Conclusion

Smart design

The nature and use of hostile vehicles has evolved in recent years with terrorism and criminal activity, so too has our understanding and response. This evolution is reflected in the design
and implementation of new and innovative physical protective security measures that help prevent and reduce the consequences of an attack.

No longer must we equate effective physical protective security with cold, sterile measures of austerity. Creative innovation is paving the way for seamlessly integrated protection measures that complement and enhance current needs and desires within public and private spaces.

Equally, common sense needs to be applied to the installation of HVM measures by clearly identifying and prioritising the areas that need protection, rather than areas where it is ordinarily
impossible for vehicles to gain access.

It is important not to over-engineer HVM.

Innovative approach = optimised integration By recognising and acknowledging risks during the design stages of a building or public space, it is possible to achieve an optimal, holistic approach to safety through security. This is also the most cost-effective time to implement physical security measures. The MacLeamy Curve below outlines the importance of early considerations.

Where to go next

Not all of the options provided in this document will be applicable or achievable at all sites. A specific and unique site assessment will need to be conducted to establish the most suitable device for each site even if an owner/ operator has multiple similar assets. The surrounding environment will not be the same in each instance and these differences, no matter how subtle, will impact on the nature of the HVM solutions required.

Source: nationalsecurity.gov.au

Call now on 03 9326 2244 or leave your contact details here  for a free, no obligation consultation on providing real protection for your next street event, sporting event or outdoor program.

cropped-profile-pic.pngAML Risk Management – Planning, Prevention, Protection

#HostileVehicleMitigation

 

AML Introduces Meridian Group’s Anti Vehicle Barriers

AML Risk Management offer the Meridian Rapid Defence Group’s Anti Vehicle Barriers in Melbourne, Greater Victoria and elsewhere on demand.Please find a further description of the units and their capabilities here. Take the time to read the entire article to fully understand the application of Vehicle Barriers, their ease of use and the portability of the Meridian range.

Meridian Rapid Defence Group Anti Vehicle Barriers

Meridian Rapid Defence Group – Archer 1200 Barriers

Meridian Rapid Defence Group have developed the first portable barriers to successfully stop a vehicle traveling at 48km per hour, with a total weight of 1.5 tonne.
In July 2017 the Archer 1200 Anti-Vehicle Barrier successfully passed and was certified by the standards of the European Publicly Available Specifications security standard. Standards held by the U.S Department of Defence and Department of Homeland Security guidelines have been met by the Archer 1200 Barriers. As a part of meeting these guidelines the Archer 1200 was able to bring a high risk vehicle to a complete stop, in less than just 10 feet.

These barriers are designed to protect high traffic and/or pedestrian areas, from vehicles which may be considered dangerous. This is achieved by the barriers ability to harden a perimeter. The barriers are also able to be re-deployed in the event of changing conditions or changing threat levels.

Meridian Rapid Defense Group           Anti-Vehicle Barriers

Meridian Rapid Defence Group Archer 1200 Anti-Vehicle Barriers

One of the most appealing features of the Archer 1200 Anti-Vehicle barrier is its ability to be moved and installed with ease. The task can be completed by just 1-2 people and can be accomplished within a few short minutes. This feature is of high importance, as it allows areas to be blocked off and re-opened in the event that an emergency vehicle requires access.

Movement and installation is completed by attaching an Archer towbar to the portable barrier. No other tools or materials are necessary during any movement of the barriers.
Included below is a link to a guided demonstration of the barrier installation, completed by Meridian Rapid Defence Group.

Other valued features include:

  • Portable
  • Electricity free
  • Hydraulic free
  • Do not require maintenance
  • Reusable after impact
  • Non-lethal
  • Able to be deployed by 1 person
  • Harden Perimeter
  • Heavy duty material
  • Ballistics tested

Why choose Archer Anti-Vehicle Barriers?

Meridian Rapid Defence group have carefully developed and tested their products to deliver high quality. The Archer 1200 Barriers have a proven ability to stop high risk vehicles, and have also been ballistics tested to .50 calibre ball rounds.
At AML Risk Management, we are more than just a Security provider. The team at AML will strive to complete any task at a high standard. Our goal is to provide the safest environment achievable through liaising with the client and evaluating safety concerns specific to the event or location. We stand for the safety and quality of service delivered to the client, while maintaining an adaptable approach to security needs. We believe that through the use of Meridian Rapid Defence group’s high quality products, we are able to implement security measures that cater for modern day threats to public safety.

The use of the anti-vehicle barriers will drastically increase public safety at any event or location. Archer barriers have been used to harden the perimeter of Mardi Gras in New Orleans. Meridian Rapid Defence Group was also able to cater for the 55th Annual Grammy Awards by deploying Archer Barriers, as the risk of a security threat was heightened due to rogue police officer Christopher Dorner.

Meridian Rapid Defense Group           Anti-Vehicle Barriers

Meridian Rapid Defense Group Archer 1200 Anti-Vehicle Barriers

Meridian Rapid Defence Group Barrier Kits

Barrier Kits are a great example of how to utilise the barriers and how they are adaptable to a variety of circumstances. They maintain the ability to secure a premises to suit the needs of the client and the safety of all affiliated with the location or event. The kits demonstrate the ability to prevent all access, or partial access to and from a premises. Along with adapting to the needs of the client, barriers can be used in different ways to accommodate an increased need for security. Such as if an event or location is considered to be at an elevated risk level, or even if the threat level is considered imminent. While used alongside traffic cones, barriers may also be deployed to simply slow vehicle traffic passing through designated areas. The following kits have been constructed by Meridian Rapid Defence group as a guideline to the use of Archer 1200 Anti-Vehicle Barriers.

Conventions for Barricade Strength

threat levels

Meridian utilises the National Terrorism Advisory System as a universally relevant lexicon for describing the specific security needs for a given location. Within an overall property, there may be areas of lower or higher risk due to surrounding physical structures, existing security, ambient traffic flow or target value to terrorists.

For areas of Elevated risk, barriers may be configured more for deterrence than vehicle stoppage, whereas areas of Imminent risk would warrant maximum protection designed to decrease or completely eliminate vehicle penetration. Generally Meridian Barriers should be employed in all areas of Elevated, Intermediate or Imminent Risk. As a critical point of difference from fixed solutions, the modular nature of the Meridian barriers allows a property to respond to changes in overall threat levels.

Lane Merger

lane merger

Soft technologies such as rubber cones and flares are often used to guide traffic in a direction or to gradually close off a lane. While effective in communicating the desired action, they are completely ineffective in true vehicle mitigation (zero stopping power).

Meridian Barriers are used in conjunction with cones to guide traffic as well as prevent a breach or by-pass of lane closure.

Single Lane Closure

single lane closure

Meridian Barriers are ideally suited for preventing vehicle breach at narrow high-threat areas such as gates, driveways or single/double lane roadways.

In these formations, vehicle entry is completely prevented and areas with large, fast-approaching encroachments.

Two Lane Closure

two lane closure

Meridian Barriers can be laced across more than one lane while still allowing fast and easy movement for pedestrians or emergency vehicles.

Span Protection

span protection

The interface between roadways and unprotected promenades, outdoor malls or parkways leaves pedestrians particularly vulnerable. Meridian Barriers are a drag and drop portable solution, which can be placed across large passageways to serve as highly effective, temporary bollards.

Other Products

Other products developed by the Meridian Rapid Defence Group include the Archer beam gate. This product is available upon request.
To view products created by Meridian Rapid Defence Group please visit http://www.betterbarriers.com/products/.

Our Services

AML Risk Management is a licenced and experienced Security Firm which operates at an industry leading standard. Our experienced team of trained professionals strive to complete every task to the satisfaction of the client. Part of our goal is to maintain the flexibility to cater for the unique security needs of any event at any capacity. This is achieved through the diverse range of services we offer, from basic crowd control and asset protection, through to our Emergency Response and Emergency Management Teams. We also have a highly skilled Asset Protection Unit who are qualified to operate and carry out Trace Detection.

We believe that the use of Meridian Rapid Defense Group Barriers within our company has increased our ability to maintain high standards of security.

AML Risk Management has the ability to provide, install and manage the use of barriers for any event. Barriers are also available for outright purchase with the tools and training to self-manage deployment.

Upon request, AML Risk Management is also able to provide a detailed evaluation of the site or event looking to install Meridian Rapid Defense Group barriers.

Enquiries

For all enquiries regarding our services, or to request a consultation, please leave your details here on our website or call now on 03 9326 2244

Preparation, Prevention, Protection – The AML Way