P.E.A.R.S. is an open consortium (established in 2012 as Harmonization Group) in which engineers and researchers from the automotive industry, research institutes and academia join with the objective to develop a comprehensible, reliable, transparent, and accepted methodology for quantitative assessment of crash avoidance technology by virtual simulation. The focus of P.E.A.R.S. is on the development of an ISO standard for the prospective assessment of traffic safety for vehicle-integrated active safety technologies by means of virtual simulation.

You can find more information about PEARS at their website.