The FMVSS-571.208 regulations contain injury criteria for the head, neck, chest, and femur. The neck injury criteria in particular include a check of axial neck forces and frontal plane bending moments. The upper neck force in tension and compression, and the upper neck flexion and extension moment are monitored in time and with respect to critical values. Recently, vehicle safety belt systems have undergone a variety of changes including belt pre-tensioning and belt load-limiting functions. It is not clear if these advanced belt systems have the potential to allow higher neck loads to occur. These belt systems also allow different head motion to occur depending on the body mass, occupant age, stature, crash severity, and other factors. Since a dummy’s head motion is dictated largely by the biofidelity of the neck, established neck biofidelity criteria under different belt systems would allow for enhanced functioning of these advanced systems. The calculation of neck loads is a challenging task in PMHS. To provide meaning to the upper and lower neck loads recorded from dummies, a robust method of measurements and calculations is required. This paper outlines specific methodology and preliminary results from a series of frontal impact sled tests with both PMHS and dummies.