In the context of road safety, what does the acronym 'CMF' stand for, and where is the primary clearinghouse for CMF values?

1. Crash Management Framework; maintained by state DOTs
2. Crash Modification Factor; maintained by the CMF Clearinghouse (cmfclearinghouse.org)
3. Countermeasure Monitoring Form; maintained by NTSB
4. Crash Mitigation Fund; maintained by FHWA