Tier 1: Non-negotiable (missing any one is near-automatic liability)
- Active operating authority. USDOT active, MC authority in Authorized status.
- Federal-minimum insurance on file. $750K BIPD for general freight, $1M for hazmat, with effective dates that cover the tender.
- No Unsatisfactory safety rating. Unsatisfactory means FMCSA has found the carrier unfit. Indefensible to tender.
- No active out-of-service order. An OOS order means FMCSA has ordered the carrier to stop operating.
- Not on your Do-Not-Use list. Tendering to a carrier you previously excluded is the worst document discovery can find.
Tier 2: Standard due diligence (what courts now expect)
- SMS BASIC alert status. Flag any category in Alert. Multiple alerts is escalation or rejection.
- Crash history (24 months). Any fatal crash requires documented justification for selection.
- OOS rates vs. national average. Driver OOS ~6.5%, Vehicle OOS ~20.7%. 2× or more is a red flag.
- Inspection history. Zero inspections in 24 months is a data gap you must acknowledge.
- Authority age. New carriers (under 18 months) crash at roughly 2× the rate of established peers.
- MCS-150 currency. Filings over 24 months stale render the rest of the carrier's data unreliable.
- Entity type verification. Broker-only authority means tendering to them is double-brokering.
Tier 3: Gold standard (strongest defense)
- Signed carrier safety attestation. Pre-trip inspection, driver fitness, valid CDL, HOS compliance, insurance currency, drug testing program.
- Certificate of insurance on file. Actual ACORD 25, not just the FMCSA filing.
- Broker sign-off. The rep who made the call signs that they personally reviewed the data.
The documentation that holds up
The checklist is the easy part. The hard part is producing the record years later, in deposition, in front of a jury, with a hash chain that proves it was created at the moment of tender — not reconstructed after the crash. DOTScreener runs every item above against live FMCSA data, captures a timestamped snapshot, collects the attestation through a cross-device portal, and produces a tamper-evident SHA-256-chained audit log. That is the file your defense counsel wants when the demand letter arrives.