The United States Department of Transportation has instituted the Speed Management Strategic Initiative, seeking more effective ways to manage the crash-related effects of speeding. In support of this initiative, this study examined recent crash data through the development of a speeding-related (SR) crash typology. Such a typology can help define the crash, vehicle, and driver characteristics that seem to result in a higher probability of SR crashes. Thus, the goal of this study was to determine the “what,” “where,” “when,” and “who” descriptors of SR crashes in order to provide guidance to the future development of new treatments and to better target new and existing treatments to subgroups of drivers and types of roadways (e.g., two-lane rural) or roadway locations (e.g., unsignalized intersections). This summary report briefly discusses the findings as reported in the main report (FHWA-HRT-10-024).