49 CFR Part 387. You've probably seen it mentioned in trucking forums, broker contracts, or legal notices. But what does it actually mean for you as an owner-operator?
Here's a plain-English breakdown.
What is 49 CFR Part 387?
49 CFR stands for Title 49 of the Code of Federal Regulations — the section of federal law covering transportation. Part 387 specifically governs minimum levels of financial responsibility for motor carriers, brokers, and freight forwarders.
In plain terms: it sets the rules for how much financial protection freight brokers and carriers must carry to protect the people they do business with.
The January 2026 Amendment
The rules that most matter for owner-operators today came into effect in January 2026. The amendment made three major changes to broker requirements:
Surety bonds must be liquid
All licensed freight brokers must maintain a $75,000 surety bond. Before the amendment, this bond could be structured in various ways. Now, it must be held in cash or US Treasury securities.
This matters because it means the money is actually accessible when someone files a valid claim. No delays, no insurance policy fine print.
Seven-day replenishment rule
If a valid claim reduces a broker's bond below $75,000, they have seven calendar days to restore the full amount. Failure to do so puts their operating license at risk.
For drivers, this creates an enforcement mechanism with real teeth. A $200 claim that a broker ignores can now trigger a regulatory deadline that threatens their ability to operate.
48-hour reporting
Surety companies must report to the FMCSA within 48 hours when a broker fails to honor a valid claim or fails to replenish their bond. This goes on their public record.
What this means for you practically
Before January 2026, an owner-operator with an unpaid detention claim had limited options:
- Ask the broker and hope
- Hire an attorney (expensive for small claims)
- File in small claims court (time-consuming)
- Give up
The new rule adds a fourth path: file against the surety bond. This is formal, costs nothing to initiate, and creates consequences the broker cannot ignore.
How to find a broker's bond information
Surety bond information is public. Go to safer.fmcsa.dot.gov, search for the broker by name or MC number, and look at their insurance/bond filings. You'll find the surety company name and bond number.
Contact the surety company directly with your documentation to file a claim.
What Part 387 doesn't cover
A few things to be clear about:
- Part 387 doesn't guarantee you get paid on every claim. Your documentation still needs to be solid. A claim without a signed rate confirmation or GPS proof is harder to win.
- Part 387 applies to licensed brokers, not unregistered parties. Always verify that the broker you're working with has an active MC number.
- Part 387 sets minimums. Some brokers carry higher bond amounts. Most stick to the $75,000 minimum.
The bigger picture
49 CFR Part 387 didn't create your right to detention pay. That right comes from your rate confirmation. What Part 387 does is create a regulatory enforcement mechanism that makes ignoring your claim expensive for brokers.
The law has always been on your side. Now the enforcement is too.