Primary Trucking Liability: What Texas Carriers Must Carry

Primary liability is the foundation of every commercial trucking insurance program. Without it, you cannot legally operate. Without the right limits, one bad accident can end your business.

This guide breaks down what Texas carriers are required to carry, what primary liability actually covers when a claim hits, and where the coverage stops. If you run your own authority or lease to a carrier in Texas, this applies to you.

Primary Liability Mistakes That Cost Truckers Money

Carrying the Federal Minimum and Calling It Enough

The FMCSA sets a federal floor on primary liability. For carriers hauling general freight, that floor is $750,000. For hazmat loads, it jumps to $1,000,000 or $5,000,000 depending on the commodity. Those numbers sound large until you price out a serious accident.

A multi-vehicle collision on I-10 near the Houston metro, involving a passenger vehicle, medical bills, lost wages, and legal defense, can generate claims that blow past $750,000 without breaking a sweat. Most carriers operating out of the Port of Houston or running the DFW freight lanes carry $1,000,000 in primary liability as a practical floor. Many shippers and brokers require it before they will tender a load. Carrying the bare federal minimum is a compliance strategy, not a protection strategy.

Confusing the Motor Carrier's Coverage with Your Own

This is where lease-on operators get hurt. If you are leased to a motor carrier, that carrier's primary liability policy covers your truck while you are operating under their authority and their dispatch. The moment you are off their dispatch, bobtailing home, or running a load under your own authority, that coverage does not follow you.

Operators who assume the carrier's policy covers everything they do often find out the truth at the worst possible time. Your attorney fees alone in a liability claim can exceed what you thought you were protected for.

Not Reviewing the Policy After Adding Trucks

Small fleets in Texas grow fast. You add a second truck, then a third. Each addition changes your risk profile and can create gaps if you do not update your policy. Some fleet policies schedule each unit individually. If a truck is not scheduled, it may not be covered. Pull your policy and confirm every unit is listed before that truck leaves the yard.

What Primary Trucking Liability Actually Covers (and What It Doesn't)

Primary liability pays for bodily injury and property damage you cause to third parties. That means:

• Medical bills and lost wages for injured parties in other vehicles
• Property damage to other vehicles, structures, and infrastructure
• Legal defense costs when someone sues you
• Settlements and judgments, up to your policy limit

What it does not cover:

Your truck. Physical damage to your own equipment requires a separate physical damage policy. Primary liability pays the other party, not you.

Your cargo. Motor truck cargo insurance is a separate line. If a load is destroyed in an accident you caused, your primary liability does not pay the shipper or broker. You need cargo coverage for that.

Your medical bills. Occupational accident coverage or health insurance handles injury to you or your co-driver. Primary liability is outward-facing.

Non-trucking use. If you are using your truck for personal errands while under a carrier's lease, that carrier's primary liability typically excludes those trips. That gap is what non-trucking liability (bobtail coverage) is designed to fill.

Pollution or environmental cleanup. Most standard primary liability policies exclude pollution. Carriers hauling certain commodities need a pollution liability endorsement.

Running Texas Freight Lanes: Where the Gaps Show Up

Take a flatbed operator based in Katy running steel coil out of a Houston-area mill to a fabrication yard in San Antonio. The load is heavy, the freight is high-value, and I-10 through the Hill Country is not a forgiving stretch of road.

If that operator carries $750,000 in primary liability and causes a serious accident involving multiple vehicles, the claim could exceed the policy limit quickly. At that point, the judgment attaches to the business and personal assets. A $1,000,000 limit with a solid umbrella behind it is a different conversation entirely.

Now put that same operator at a TxDOT weigh station on a Texas DPS compliance check. The inspector asks for proof of insurance. The MCS-90 endorsement on the policy is what satisfies FMCSA financial responsibility requirements. That endorsement is not optional. It is the document that tells the federal government your carrier has minimum liability in force. If your policy does not include it, you are not compliant, regardless of what your limits say.

Operators pulling containers out of the Port of Houston face an additional layer. Many port contracts and chassis providers require carriers to show proof of specific liability limits before accessing terminal gates. Showing up with a policy that does not meet their requirements means you sit at the gate while your appointment window closes.

How TB Insurance Approaches Primary Liability

We do not sell the cheapest policy and move on. Our team has worked inside the trucking industry, not just around it. That means when we build a primary liability program for a Texas carrier, we start by understanding the freight lanes, the commodities, the customer requirements, and the carrier's growth plans.

For owner-operators running under their own authority, we review what the FMCSA requires, what the freight market requires, and what actual claims exposure looks like on the routes you run. For small fleets growing from three trucks to ten, we make sure each unit is scheduled, limits are appropriate as the fleet scales, and the MCS-90 is properly filed.

We hold relationships with 25-plus carriers. That matters when your freight profile is unusual, your commodity is hard to place, or you are trying to get filed quickly because a load is waiting. We can move faster and with more options than a broker working off a single market.

We are also licensed in Texas and South Carolina. If you run I-10 west out of Houston or I-26 through the Upstate into Spartanburg, we know those corridors and how carriers in FMCSA Region 6 and Region 4 get reviewed.

Get a Coverage Review

If you have not looked at your primary liability limits recently, that is the place to start. Limits that made sense two years ago may not reflect what shippers require now or what your actual exposure looks like on the routes you are running.

Contact TB Insurance Group for a straight review of your current policy. We will tell you exactly where you stand, what you are missing, and what it takes to fix it. No sales pitch. No pressure. Just a clear picture of your coverage.

Call us or request a review through our website. We are based in Katy, TX, and we work with carriers across Texas and South Carolina every day.