The objective of this project was to use the techniques developed in earlier NCHRP 20-24(37) projects to develop comparative statistics on highway safety, factors likely influencing safety experience of states, and strategies used by states with best safety experience. The research entailed recruiting volunteer states to provide data, compiling and analysing the data provided to compute comparative and summary performance statistics, identifying superior performance among the participating states while maintaining the participants' anonymity, and determining Best Practices that contribute to superior performance results. A detailed Best Practice Analysis was conducted for the top performing statesthat were willing to permit their identities to be revealed.