THREATLINE evaluates carriers using 22 rules across 6 categories: compliance, safety, fleet realism, complaints, crash history, and ghost carrier detection. All data sourced from FMCSA QCMobile API, DataHub Census (4.2M+ carriers), DataHub Crash Records, DataHub Inspection Records, and FMCSA Carrier Authority files. Crash scoring is normalized by fleet size and carrier age. Every evaluation is hash-chained for auditability. Data refreshes daily at 03:00 CT.