Tested safetyThe testing methods are precisely defined in the EN 1317 in order to be able to compare restraint systems of both various types of construction and those of various materials. After positive testing, each product can be described with few code numbers. These basically consist of:
- the containment level (e.g. H4b)
- the working width (e.g. W6)
- the Impact Severity Level ASI (e.g. ASI B)
These three values enable to distinguish between steel guardrails, local- and prefabricated concrete safety barriers independently of their style of construction. Thus it is easier to estimate their reaction in case of impact.
After more than 100 positive crash tests and after having been present on European roads for decades, the following essential qualities of the DELTA BLOC® product range turned out:
Superior protection for vehicle passengers
DELTA BLOC® vehicle restraint systems consist of pre-fabricated concrete elements with the New Jersey profile, which are loosely set up on the subsurface. Some systems feature anchoring in the subsurface, or they are supported by abutments or an asphalt recess. But basically all elements are interconnected by a patented coupling system and form a continuous element chain.
Apart from the modern New Jersey profile the DELTA BLOC® element chains also feature the property that in case of an impact they will give way to a limited extent and absorb energy. This is achieved by the shifting or a slight tilting effect of the element chain. In this way a large portion of the impact energy is dissipated.
In case of an impact this innovation means for the passengers of the vehicle reduced risk of injury and thereby best possible protection.
Tested occupant safety
Reliable breakthrough protection
Even in case of bad impacts the DELTA BLOC® system offers the highest possible protection against breakthrough of a vehicle.
turn around of a 38t – articulated lorry
Small displacement of elements
The displacement of elements is clearly smaller than that of steel systems of the same containment level.
small displacement of the safety barrier even in case of extreme impacts
 Information Containment Levels
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