When a semi crosses the centerline on Highway 95 or jackknifes on a grade above Missoula, the person behind the wheel becomes the face of the crash. It is natural to assume the driver is who you sue, and the driver’s insurance is where your recovery comes from.

In a serious truck accident, that assumption can cost you most of what your case is worth. The driver is usually the least insured, least solvent party involved. The companies standing behind that driver are where the real accountability lies, and a decision handed down by the United States Supreme Court in 2026 just added one more name to the list.

Why One Defendant Is Rarely Enough

Federal law requires most general-freight carriers to carry only $750,000 in liability coverage. That number was set in 1980 and has never been adjusted for inflation. A single catastrophic injury, with a life-flight, multiple surgeries, and a lifetime of lost earnings, can exceed it before the case is even filed.

When the insurance runs out, the injured person absorbs the difference. That is why experienced truck accident lawyers spend the early weeks of a case mapping every company whose decisions put that truck on the road, and every insurance policy attached to them. Each responsible party can mean another layer of coverage.

The Motor Carrier

The trucking company that employs or leases the driver is almost always the first party beyond the driver. In both Idaho and Montana, an employer is responsible for the negligence of an employee acting within the scope of their job. If the driver was hauling the company’s freight when the crash happened, the company answers for it.

But carriers can be liable for their own conduct as well. Negligent hiring, training, and retention are separate claims. Did the company check the driver’s record before putting them in a truck? Did they keep a driver who had racked up violations or failed drug tests? Did they push schedules that made hours-of-service violations inevitable?

Trucking companies often argue the driver was an independent contractor to distance themselves from the crash. Federal safety regulations undercut that argument. A carrier operating under its own authority is responsible for the vehicles and drivers it controls, regardless of what the paperwork calls them.

The Freight Broker: What Changed in 2026

Most freight does not move on a simple handshake between a shipper and a trucking company. A freight broker sits in the middle, taking the shipper’s load and selecting the carrier that will haul it. The broker never touches the truck, but it decides who does.

For years, brokers argued that a federal deregulation statute shielded them from negligence lawsuits when their chosen carriers caused crashes. Some federal courts agreed, and injured people in those jurisdictions lost their broker claims before reaching a jury.

In 2026, the Supreme Court settled the question. The case involved a man who lost his leg when a truck struck his stopped vehicle on an Illinois highway. He sued the broker that arranged the load, one of the largest in the country, alleging it selected a carrier with a conditional federal safety rating and documented maintenance and driver problems. In a unanimous decision, the Court held that state negligence claims against brokers for choosing unsafe carriers are not preempted by federal law.

The ruling does not make brokers automatically liable. A broker that does its homework and selects a reputable carrier can still defend itself. But a broker that hands a load to a company with a poor safety record now has to answer for that choice in court, and its own insurance coverage becomes part of the picture. For crashes on I-90, where much of the freight is brokered through national logistics companies, that is a meaningful shift.

The Shipper and the Loader

The company that owned the cargo, and whoever loaded it, can also share responsibility. Federal cargo securement rules impose duties on those who load and secure freight. An overloaded trailer, a load that shifts on a mountain curve, or a sealed container the driver was never allowed to inspect can make the shipper or loading contractor liable for a rollover or jackknife.

A poorly distributed load that behaves fine on flat interstate can become unstable on the descent from Lookout Pass or Fourth of July Pass.

Maintenance Contractors and Manufacturers

Brake fade on a long downgrade is one of the most common causes of catastrophic truck crashes in the mountain West. When brakes fail, the question becomes who last worked on them. A repair shop that performed defective brake or tire work can be independently liable, as can the manufacturer of a component that failed. These claims require expert inspection of the truck, one more reason evidence must be preserved early.

How the Pieces Fit Together

Identifying every liable party is about matching the scale of the harm to the resources available to pay for it. Each company may carry primary, excess, and umbrella coverage. A federal endorsement on most carrier policies requires the insurer to pay a public judgment up to the federal minimum even when the policy would otherwise exclude the claim. A lawyer builds the picture from federal motor carrier filings, the bill of lading, broker-carrier agreements, and lease documents, then pursues each layer.

Both Idaho and Montana apply modified comparative fault, so how blame is divided among these parties, and how much is assigned to you, shapes the final number. Naming the right defendants in the right forum, especially when a crash straddles the state line, is part of the strategy from day one.

Make Sure No One Is Left Off the List

The driver may be the person who hit you, but rarely the only reason the crash happened, and almost never the only party who should pay for it. An experienced truck accident attorney knows how to trace a load back through every company that touched it and hold each accountable. Powell Law Firm has represented catastrophically injured people across Idaho and Montana for decades. If you or a family member was hurt in a truck crash, a free consultation is the first step toward finding out who is truly responsible.