The Defender50 is a crash barrier and vehicle impact barrier designed for demanding Traffic Management applications, crash tested to BS EN 1317 N1 at 50mph. Within its class, it is the only road traffic barrier to be independently crash tested with top fence panels in place, which gives procurement teams and safety officers a verified specification for combined barrier and hoarding configurations near live traffic. Manufactured from UV-stabilised polymer, the Defender50 withstands prolonged outdoor exposure without degradation.
The Defender50 holds up to 400 litres of water and is fitted with an easy top-fill design and a built-in sump plug for straightforward filling and drainage. The angular movement of 138 degrees allows the barrier to follow curves and non-linear layouts across construction site perimeters, highway schemes, and high-risk roadside zones. Vehicle Gates and Pedestrian Gates are installed without disassembling the existing barrier line, which reduces disruption and downtime when access requirements change during a project.
The Defender50 is compatible with the full DoubleTop Range and accepts custom embossed corporate branding. A robust interlocking system using two metal plates and a steel tube connects units securely, maintaining alignment and stability under load across extended barrier runs.
Key Features and Benefits
BS EN 1317 N1 crash tested at 50mph: The only barrier in its class crash tested with top fence panels in place, providing a verified combined specification for procurement and method statements
400-litre capacity: High fill volume delivers substantial stability for high-risk environments and exposed highway locations
138-degree angular movement: Wide angular range allows curved and non-linear layouts without specialist corner pieces
Gate installation without disassembly: Vehicle and pedestrian gates are added to the live barrier line without dismantling adjacent units
Built-in sump plug: Straightforward on-site drainage for emptying, repositioning, and transport logistics
DoubleTop compatible: Integrates with the full DoubleTop range for consistent height extension across the site
Custom branding: Embossed corporate logos available for client-facing and site identification use
Frequently Asked Questions
Q. What makes the Defender50 different from other 50mph crash barriers?
A. The Defender50 is the only road traffic barrier in its class that has been independently crash tested to BS EN 1317 N1 at 50mph with top fence panels in place. Most crash barriers for sale in the UK are tested as standalone units. The Defender50's combined test result means you have verified containment data for the full barrier and hoarding configuration, which supports procurement specification on contracts where fence-topped crash barriers are required near live traffic. The 400-litre capacity and 138-degree angular movement add stability and layout flexibility beyond what many comparable vehicle impact barriers provide.
Q. Can the Defender50 Barrier be fitted with hoarding panels?
A. Yes. The Defender50's interlocking system uses two metal plates and a steel tube to create a robust connection that accepts Hoarding Panels and mesh toppings. The barrier is fully compatible with the DoubleTop range. This makes the Defender50 suitable for compound security and site separation near live traffic where a crash-rated base barrier with full-height hoarding is required. Pedestrian and vehicle gates are installed within the barrier line without dismantling adjacent units, maintaining the integrity of the perimeter while access points are added or changed.
Q. How is the Defender50 Barrier filled and drained?
A. The Defender50 fills via an easy top-fill design with a secure fill cap, which allows straightforward on-site setup without specialist equipment. A built-in sump plug drains the full 400-litre capacity for repositioning or transport. The 400-litre volume contributes to the barrier's stability in high-risk environments and means the filled weight is significant, so transport logistics should account for the empty barrier weight and the need to fill on site rather than transporting pre-filled units.
Get in Touch with Us
Contact Your Nearest Altrad Generation Branch to discuss the right traffic management barrier for your project.
