A collection of the 73 unique codes identified as simple codes: https://release.niem.gov/niem/codes/mmucc/4.1/mmucc.xsd
See the MMUCC Guideline Fifth Edition (2017) for more information: https://crashstats.nhtsa.dot.gov/Api/Public/Publication/812433
About MMUC from NHTSA: https://www.nhtsa.gov/mmucc-1
To encourage greater uniformity, the National Highway Traffic Safety Administration (NHTSA) and the Governors Highway Safety Association (GHSA) cooperatively developed a voluntary data collection guideline in 1998. The MMUCC guideline identifies a minimum set of motor vehicle crash data elements and their attributes that States should consider collecting and including in their State crash data system.
The MMUCC 5th Edition is the result of an 18-month collaboration between NHTSA, the Federal Highway Administration (FHWA), the Federal Motor Carrier Safety Administration (FMCSA), the National Transportation Safety Board (NTSB), the GHSA, and subject matter experts from State DOTs, local law enforcement, emergency medical services, safety organizations, industry partners, and academia. The traffic records community and general public also contributed through external forums (Federal Register) and at the 2016 Traffic Records Forum.
Added: March 26 2022
Updated: March 26 2022