THIVTheoretical Head Impact Velocity (automobile testing)
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On the basis of recommendations of the above mentioned standard, for a impact severity level, determining occupant security level, the value of ASI criterion for metal barrier structures should not exceed 1, THIV [less than or equal to] 33 km/h and PHD [less than or equal to] 20g.
THIV and PHD criteria are depending strongly not only on the inertial vehicle's and stiffness--force barrier possibilities but also on the geometric parameters of vehicle and its occupants.
Test types below the Standard EN 1317 Simulation description ASI THIV, PHD, g Departure km/h speed, km/h 20[degrees], 115 km/h 1.