State Data System Objective:   The objective of the State Data System is to fully develop the analytic potential of all State data of relevance to highway safety.   The States’ crash data files are unique, contain large amounts of information, and are used by NHTSA analysts for a broad range of motor vehicle crash research and reports and in the development of U.S. DOT regulation and policy. 

Expansion of the State Data System:  NHTSA recognizes that good data are critical to improving traffic safety, and increasing and improving the data that the Agency collects is a top priority.   Responding to this directive, NCSA is actively seeking new participants in SDS.   As the number of participating States increases, the research value of SDS is expected to increase proportionately.  NCSA’s ultimate goal is to include all States in the program, providing a complete census of national traffic statistics, now only estimated by NHTSA’s National Automotive Sampling System (NASS) General Estimates System (GES).

NHTSA’s State Data Program:   SDS is a part of NCSA’s overall State Data Program.   Other components of the State Data Program work to enhance the quality and utility of these crash data.  These efforts include:

• Offering guidance on standardized reporting procedures, e.g., the Model Minimum Uniform Crash Criteria (MMUCC);
• Providing technical support to NHTSA programs using State crash data; and,
• Encouraging States to link their crash and injury outcome data in programs such as the Crash Outcome Data Evaluation System (CODES).