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The necessity for avoiding the occupant ejection from their seats during motor coach rollover accidents is of supreme importance. The seat belt as a safety device is the best practical way of achieving this task. As per the motorcoach Enhanced Safety Act of 2009 passed in the United States senate, requires new motorcoaches to be installed with safety belts for each seating position. This bill also suggests the possibility of retrofitting seat belts on the existing motorcoaches. The use of portable seatbelt to restraint occupant is more economical as compared to retrofit the seat belt. This fact motivates the further research on portable restraint device. This paper demonstrates the evaluation of the first version of the Portable Restraint Device (PRD) using full scale bus rollover test. This test identified the shortcoming of this current device in securing to the bus seat and its non user friendly design.

The necessity of avoiding the destructive and non-repeatable FSST (Full Scale Sled Test) makes it desirable to devise a cheaper and more repeatable method which can supplant this test procedure. This need developed the HCTD (HIC Component Testing Device) which is capable of providing conservative HIC results with higher repeatability. The computational model of the HCTD is validated against one of the tests conducted at CAMI with polyethylene foam. This validated model is used to conduct a series of tests with input parameters similar to the sled test to develop the correlation between the sled test and HCTD. This study hence concludes that a validated computational model of HCTD can be successfully utilized to address the HIC compliance issues for a foam padded surface.