The Supreme Court's unanimous ruling in Montgomery v. Caribe stripped freight brokers of their longstanding shield against negligent carrier selection claims. If you arrange freight, whether as a broker or a shipper selecting carriers directly, this case changes the risk calculus. Shippers who vet carriers informally (or barely vet them at all) now face real exposure. The fix isn't complicated, but it does require a system: documented carrier vetting, ongoing compliance monitoring, and an audit trail for every load.

Here's what the ruling actually says, why it matters to your operation, and what steps to take now.

What Did the Supreme Court Decide in Montgomery v. Caribe?

For years, freight brokers argued that the Federal Aviation Administration Authorization Act (FAAAA) preempted state-law negligence claims against them. In plain terms, they claimed federal law blocked anyone from suing them in state court over how they selected a carrier. Courts were split on the question, and many brokers operated under the assumption that preemption would protect them.

Montgomery v. Caribe settled it. The Supreme Court ruled 9-0 that FAAAA preemption does not shield freight brokers from state-law claims for negligent carrier selection. The reasoning: selecting a motor carrier is not a "broker service" that Congress intended to deregulate. It's a safety decision, and state common-law duties around reasonable care still apply.

The decision didn't create a new legal obligation. The duty of reasonable care in selecting a carrier has existed under common law for decades. What changed is the procedural shield. Brokers can no longer get these cases thrown out on preemption grounds before a jury ever looks at the facts.

Does Montgomery v Caribe Shipper Liability Apply to You?

If you're a shipper tendering loads directly to carriers, the preemption defense was never available to you in the first place. Shippers have always been subject to common-law negligence standards when selecting carriers. But here's the practical reality: many shippers operated informally, relying on relationships, phone calls, and gut instinct rather than a documented vetting process. The risk of a lawsuit felt abstract.

That's changed. The Montgomery v. Caribe ruling has energized the plaintiffs' bar. Attorneys who previously focused on carriers and brokers are now looking upstream at anyone involved in the carrier selection decision. If a carrier you selected causes a serious accident, the question won't just be "did the carrier have insurance?" It will be "what process did you follow to determine this carrier was safe to haul this load?"

If you can't answer that question with documentation, you have a problem.

What Standard Will a Jury Apply?

When a negligent carrier selection claim reaches a jury, the evaluation comes down to three questions:

1. Did you have a written carrier vetting process? This means defined criteria for onboarding carriers, including minimum requirements for insurance coverage, FMCSA operating authority, safety ratings, and CSA (Compliance, Safety, Accountability) scores.
2. Did you apply that process consistently? A vetting policy that exists on paper but gets skipped when a load needs to move fast is worse than no policy at all. Inconsistent application suggests you knew the standard and chose not to follow it.
3. Can you document that you followed the process on the specific load in question? This is where most operations fall apart. Even shippers with decent onboarding procedures often can't produce evidence that compliance was verified at the time of tender, not just at the time of onboarding.

The standard isn't perfection. It's reasonable care. But "reasonable" in this context means you checked the things a competent logistics professional would check, and you can prove it.

Why Spreadsheets and Phone Calls Don't Hold Up

Many mid-market shippers still manage carrier compliance through a combination of spreadsheets, email chains, and periodic manual checks. That approach has three fatal weaknesses in a liability context.

First, spreadsheets are static. A carrier's insurance, safety record, and operating authority can change between the day you onboarded them and the day you tendered a load. A spreadsheet updated quarterly (or annually, or "whenever someone remembers") doesn't reflect the carrier's status at the moment that matters.

Second, manual processes are inconsistent. When vetting depends on a person remembering to check FMCSA's SAFER system, pulling a CSA snapshot, and confirming insurance certificates before every load, steps get skipped. High-volume operations make this worse. The busier your team, the more likely compliance checks become shortcuts.

Third, there's no audit trail. If opposing counsel asks you to produce evidence that you verified Carrier X's credentials before tendering Load Y on a specific date, a spreadsheet with a "last updated" timestamp from three months prior isn't going to help. Neither is "I called their office and they said they were good."

The plaintiffs' attorneys pursuing these cases after Montgomery v. Caribe know exactly what to ask for. They'll request your carrier selection policy, your compliance records for the specific carrier, and your documentation for the specific load. Gaps in any of those three areas become the centerpiece of their case.

How Does Real-Time Carrier Monitoring Reduce Liability?

A carrier that met all your criteria at onboarding can deteriorate between loads. Insurance lapses. Safety ratings downgrade. Inspection out-of-service rates climb. A driver with a clean record picks up violations. These changes happen continuously, and if you're only checking at onboarding, you're exposed.

Real-time carrier scorecarding addresses this by continuously monitoring compliance data and flagging changes as they happen. Instead of relying on periodic manual reviews, the system alerts your team (or blocks the carrier automatically) when a credential lapses or a safety metric crosses a threshold.

This matters for liability because "reasonable care" isn't a one-time event. A jury evaluating your carrier selection process will want to know whether you had a mechanism for catching changes between onboarding and tender. If a carrier's insurance lapsed two weeks before the accident and your records show it was active, the question becomes: why didn't you know?

Ongoing monitoring turns carrier vetting from a point-in-time snapshot into a continuous compliance function. That's the difference between a defensible process and a liability gap.

Why Every Load Needs a Paper Trail

The audit trail is the evidence. In a negligent carrier selection claim, your defense depends entirely on what you can produce. Not what you remember doing, not what your standard practice is, not what you "always" check. What you can show, for this carrier, on this load, on this date.

A defensible audit trail includes:

• Carrier compliance status at the time of tender (insurance, authority, safety scores)
• Which criteria the carrier met or didn't meet
• Who approved the carrier for the load (or which system rule matched them)
• Timestamp for every step

If your carrier selection process generates this documentation automatically, your legal team has something to work with. If it doesn't, you're relying on after-the-fact reconstruction, which is expensive, unreliable, and unconvincing to a jury.

The operational cost of building audit trails manually is high enough that most teams don't do it consistently. That inconsistency is exactly the vulnerability that negligent carrier selection claims exploit.

What Should Shippers Do Now?

The steps aren't complicated, but they do require commitment. If you're a shipper or a broker arranging carrier capacity, here's what a defensible carrier selection process looks like post-Montgomery v. Caribe:

Formalize your vetting criteria. Write down the minimum requirements for carrier onboarding: insurance minimums, FMCSA authority status, satisfactory safety ratings, CSA score thresholds, and any industry-specific requirements (hazmat certification, temperature-controlled equipment, etc.). If it's not written down, it doesn't exist.

Automate compliance checks at tender. Don't rely on humans to remember. Build compliance verification into the workflow so that a carrier can't be assigned to a load without passing your criteria at the moment of assignment, not at the moment they were onboarded six months ago.

Monitor continuously. Set up alerts for insurance lapses, authority revocations, safety rating changes, and CSA score movements. If a carrier falls below your thresholds between loads, your system should catch it before your team tenders another shipment.

Generate audit trails automatically. Every carrier selection decision should produce a timestamped record showing what was checked, what the results were, and whether the carrier passed. This documentation is your defense.

Review and update regularly. Your criteria should reflect current regulatory standards and industry practices. A vetting process built in 2019 and never updated won't meet the "reasonable care" standard in 2026.

Platforms like Owlery build these safeguards directly into every load: automated tender rules, real-time carrier scorecarding, and a complete audit trail for every load decision. Instead of bolting compliance onto a manual process, the vetting logic can runinside the system that assigns carriers to loads, which means it actually happens on every shipment.