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Legacy Insurance Group writes commercial trucking insurance for carriers and owner-operators running Houston, Harris County and the Ship Channel. We are a Texas agency licensed in eight states with one staffed office, in Frisco, and we serve Houston operators by phone, email and text.

Houston runs on trucks that never leave the county

Port Houston moved 4,303,345 TEUs and 54,491,066 short tons in 2025, both records, and served roughly 2.5 million trucks at its container gates. The Houston Ship Channel it sits on carries more than 200 private and eight public terminals and is, in the port authority’s own words, by far the nation’s largest port for waterborne tonnage. Figures from Port Houston’s 30 January 2026 release, checked 6 September 2026.

What that produces is a trucking economy with an unusual shape. A large share of Houston equipment runs short, repeated, heavy trips inside a fifty-mile box — port to warehouse, plant to plant, yard to rail — rather than long line-haul. Underwriters price radius, road type, commodity and trip frequency, and Houston operators are unusual on all four at once. A policy quoted as though the truck were running I-10 to El Paso is priced against the wrong risk.

Who we write in Houston

  • Port drayage carriers working Barbours Cut and Bayport. Gate cycles, chassis you do not own, containers whose actual weight you learn late, and a great deal of time queued or staged rather than moving.
  • Heavy container haulers running under the state port permit — a materially different exposure, covered in its own section below.
  • Tank truck and chemical carriers on the Ship Channel and the SH 225 corridor, where what is in the trailer sets your federal minimum limit rather than your fleet size doing it.
  • Flatbed and heavy haul serving refineries, fabrication yards and turnaround work, with physical damage values that move with the equipment on the deck.
  • Regional dry van and LTL running I-10, I-45 and I-69 out of Houston distribution space.
  • Owner-operators leased to a drayage or chemical carrier, who typically need physical damage and cover for the hours off dispatch rather than primary liability. See our independent owner-operator section.

The port overweight permit changes your risk, not just your load

Texas legal maximum without a permit is 80,000 pounds gross, 20,000 on a single axle and 34,000 on a tandem group. The TxDMV Intermodal Shipping Container Port Permit raises that for container traffic within 30 miles of designated port facilities — including Port of Houston — Barbours Cut, Port of Houston — IH610 and Port of Bayport — to 93,000 pounds on six axles or 100,000 pounds on seven. The permit costs $6,000 and runs one year from its effective date. Checked at TxDMV 6 September 2026.

Read the routing condition closely, because it is the part that matters for insurance: a vehicle operating under this permit may not use the interstate highway system, and may not cross a load-posted road or bridge above its posted limit. It runs on state, county and municipal roads approved by TxDOT.

So the permit does not simply let you carry more. It moves your heaviest loads off the interstates and onto surface streets, with more intersections, more signals, more turns and more exposure to third parties per mile than the equivalent interstate run. It raises the value at risk and the cost of a physical damage claim at the same time. If your application says local radius and stops there, it has not told the underwriter what you actually do, and a gap between how a risk was described and how it operates is what gets argued about after a loss rather than before one.

A Houston-specific rule that shows up on driver records

The Houston Police Department’s Truck Enforcement Unit enforces left-lane restrictions against commercial trucks of three or more axles, 24 hours a day, on four posted freeway segments: the East Freeway between Waco Street and Uvalde, State Highway 225 between the 610 Loop and Highway 146, the North Freeway between Loop 610 and Rankin Road, and US 290 between Loop 610 and Beltway 8. Verified on the HPD Truck Enforcement Unit’s own page, 6 September 2026.

SH 225 is the petrochemical corridor. A driver running plant work on it every day is passing through an enforced restriction every day, and left-lane citations land on an MVR like any other moving violation. Driver records are among the few premium inputs a fleet can genuinely control, so this is worth a toolbox talk rather than a shrug.

Filings and legal minimum limits

Interstate for-hire carriers of property. Federal minimum financial responsibility under 49 CFR 387.9 is $750,000 for general freight in a vehicle rated 10,001 pounds or more; $1,000,000 for oil and the hazardous materials listed in 49 CFR 172.101; and $5,000,000 for hazardous substances in bulk, Division 1.1, 1.2 and 1.3 explosives, Division 2.3 Hazard Zone A materials, and Class 7 highway route controlled quantities. Verified against the eCFR text current as of 3 September 2026.

Those tiers matter more in Houston than almost anywhere else in the country. The difference between $750,000 and $5,000,000 is not fleet size or loss history — it is what is in the trailer on a given day. A carrier that adds one placarded commodity to its lane mix has changed its legal minimum, and the filing has to follow the commodity, not the intention.

Texas intrastate carriers. Registration with the Texas Department of Motor Vehicles is required if you operate a vehicle or combination with a gross weight, registered weight or gross weight rating over 26,000 pounds, or if you transport household goods for compensation at any weight. TxDMV minimum liability is $500,000 for property carriers over 26,000 pounds, $300,000 for household goods movers under 26,000 pounds, and $5,000,000 in the highest placarded hazardous materials category. Your insurer files Form E electronically, but keeping that filing active is your responsibility, and a lapsed Form E turns an insurance problem into a registration problem. Source: TxDMV Motor Carrier Handbook, May 2025, checked 6 September 2026.

Every figure above is a legal floor rather than a recommendation. Shippers, terminals and lienholders routinely contract for more, and in the Ship Channel the facility you are hauling into often sets a higher bar than the state does.

What moves a Houston premium

  • Radius, and whether your filings and your permits agree with how you run
  • Commodity, and whether anything you haul is placarded
  • Whether you operate over 80,000 pounds, and under what authority
  • Loss history, and how claims were reserved and closed
  • Driver experience, CDL tenure, endorsements and MVRs
  • Equipment values, age and physical damage deductible
  • Cargo limits, and conditions covering unattended or staged trailers
  • Trailer interchange and chassis you pull but do not own

Houston trucking insurance questions we get

Does the port permit change my insurance requirement?

The permit itself is a size and weight authorisation, not an insurance filing. What changes is the risk underneath it: heavier loads on non-interstate roads. Tell your agent you run under it, because a carrier that finds out after a loss is a carrier looking for a reason.

I haul containers. Am I covered for the chassis?

Usually not under your own physical damage coverage, because you do not own it. Trailer interchange coverage is the usual answer, and the terms of the interchange agreement you signed at the terminal decide what you are actually on the hook for.

I run one placarded load a month. Do I need the $1,000,000 limit?

If the commodity is listed in 49 CFR 172.101, the federal minimum for that vehicle is set by what it carries, not by how often it carries it. One load a month is still a load.

Is $750,000 enough liability?

It is the federal floor for general freight. Most brokers and many Ship Channel facilities will not accept a certificate under a $1,000,000 combined single limit, so the practical requirement is usually set by your customers rather than by the regulation.

My cargo sits in a yard between the gate and the delivery. Is it covered?

It depends on the unattended-vehicle and theft conditions in your specific policy, and those vary widely between carriers. Given how much Houston drayage stages, it is a clause to read before you buy rather than after a loss.

Do you have an office in Houston?

No. We have one staffed office, in Frisco, and we serve Houston clients by phone, email and text. Almost none of our clients anywhere have ever visited an office, and none of them needed to.

Talk to a Texas agent about your Houston operation

Get a Houston commercial truck insurance quote or call 469-252-4001 to speak with a licensed agent. Tell us how many trucks, what you haul, where you run, whether you run over 80,000 pounds and what filings you carry, and we will tell you plainly what we can do.

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