Technical Details

ABBREVIATIONS

BS – British Standard written to approve VRS by means of testing
BSI – British Standards Institution
EN – European Norm
IRRRS – Interim Requirements for Road Restraint Systems
VRS – Vehicle Restraint Systems
UKAS – United Kingdom Accreditation Service
BS EN 1317 – A specification for the testing of vehicle restraint systems. The requirements for each test eg. angle, speed, weight is stated within BS EN 1317
TVCB – Concrete barriers
LANTRA – Training school

The effective Working Width of ASSET VARIOGUARDĀ®, anchored at each end only, is W5.

The Working Width of ASSET VARIOGUARDĀ® anchored at 20 m is W4.

TRL note on tests completed for ASSET – “Since the flanged base of the ASSET VARIOGUARDĀ® extends 150 mm in from the traffic face the set back distance of the barrier can be reduced by 150 mm without adversely affecting the performance of the barrier. As a consequence the Working Width can be reduced by a corresponding distance.”

WORKING WIDTH AND DEFLECTION

The width of the barrier and the deflection upon collision.

The width of the barrier and the deflection upon collision

Classes of working width Levels of working width (m).

The width of the barrier and the deflection upon collision

IMPACT TEST CRITERIA

Table detailing impact test criteria

COMPARISON OF IMPACT ENERGY LEVELS – EN 1317-2

Table with comparison of impact energy levels

TESTS

TB11 European small car test
TB32 UK Normal Containment
TB51 UK High Containment
NCHRP 350 3-10, 4-10, 5-10, 6-10 USA small car test
NCHRP 350 3-11, 4-11, 5-11, 6-11 USA pickup test (US Norm)

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