Mapping to MMUCC
Since 2009, MMUCC data elements have been part of the National Information Exchange Model (NIEM), which facilitates cross-platform information sharing. But because MMUCC is voluntary States often use different formats and names for data elements and attributes or they may combine (or split) MMUCC elements and attributes. As a result, it can be very difficult to compare or share crash data among States, between State and Federal data sets, and—in some cases—even between different agencies within a State.
To assist States in evaluating their consistency with MMUCC, NHTSA and GHSA have developed a methodology for mapping the data collected on PARs and the data entered and maintained on crash databases to the data elements and attributes in the MMUCC Guideline. This methodology is intended to standardize how States compare both their PARs and their crash databases to MMUCC.
The results gained from multiple applications of Mapping to MMUCC will be used to revise the existing MMUCC elements, and sharpened through use the mapping process methodology will be incorporated into the Fifth Edition of the MMUCC Guideline.