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Arizona has two different weight thresholds that people routinely treat as one. The safety rules start at 26,001 lbs. The insurance requirement starts at 20,001. If you run straight trucks in that gap you are required to carry $300,000 of liability while sitting outside the commercial motor vehicle definition entirely, and it is a good way to be uninsured for the thing you thought you were insured for.

We are an independent agency in Frisco, Texas. We are licensed in Arizona, we write commercial trucking and towing risks there, we make the state and federal filings for our clients, and this page sets out the coverage and the paperwork side by side.

Who we write in Arizona

We do not write personal auto, and we are not the right agency for a single pickup with no commercial exposure. Everything else in the list above we quote regularly.

The corridors and the work that set the risk

Arizona’s freight is organised around two interstates and one border, and the state gates all three.

I-10. The southern transcontinental lane, from the California line at Ehrenberg through Phoenix and Tucson to the New Mexico line at San Simon. Long, fast, hot running with heavy through traffic. Arizona operates ports of entry at both ends of it.

I-40. The northern lane, entering at Topock and leaving at Sanders, at altitude across the Colorado Plateau. Winter weather on I-40 around Flagstaff is a genuine exposure that surprises carriers who think of Arizona as a desert state — this is snow country at 7,000 feet.

The border. Nogales–Mariposa and Douglas carry the commercial crossings, with produce northbound in volume and manufactured goods both ways. Cross-border work involves ADOT, US Customs and Border Protection, FMCSA and the Department of Public Safety at the same facility, and the compliance surface is wider than domestic work. If you are drayaging across, trailer interchange and on-terminal liability are live questions.

Phoenix and Tucson metro. Regional distribution and a large construction and aggregate population. Short radius, high frequency, and growing traffic density.

Arizona’s ports of entry are worth understanding as an underwriting fact rather than an inconvenience. They “monitor all commercial traffic entering Arizona for registration, taxes, size and weight restrictions, commercial driver license requirements, insurance requirements and equipment safety requirements.” Your paperwork gets looked at on the way in, every time.

Permits, filings and legal minimum limits

The dividing line is the freight, not the truck and not your address. If a load starts or ends outside Arizona, or is one leg of a continuous move that does, you are in interstate commerce. If every load starts and ends inside Arizona, you are intrastate.

Interstate, filed with FMCSA. A USDOT number first, operating authority (the MC number) if you haul regulated commodities for hire, a BOC-3 designating process agents, and proof of insurance carrying the MCS-90 endorsement. The federal minimum for a for-hire carrier of non-hazardous property at 10,001 lbs GVWR or more is $750,000 per occurrence. Oil and the listed hazardous materials run to $1 million, and bulk hazardous substances to $5 million. The MCS-90 is not coverage for you: it guarantees the public gets paid up to the filed limit, and if your insurer pays under it where your policy would not have, you owe that money back.

Intrastate: there is no Arizona operating authority to apply for. Arizona does not issue an intrastate certificate or an intrastate MC number for property carriers — a claim you will see made and that is not supported by anything ADOT or the Arizona Revised Statutes publish. What Arizona requires is a USDOT number. ADOT’s own registration guidance sets the trigger at a gross vehicle weight rating “of more than 10,000 lbs and operate in interstate commerce or a GVWR of more than 26,000 lbs and operate in intrastate commerce.” Arizona-only carriers are also exempt from the New Entrant safety audit: ADOT states that “if you are a motor carrier operating only in Arizona, you are considered an intrastate motor carrier and do not need to schedule a safety audit.”

The Arizona liability minimums — and the threshold that is not where you think. Arizona sets its own amounts in statute rather than adopting the federal schedule. Section 28-4032 of the Arizona Revised Statutes applies the financial responsibility requirements to anyone operating “in the furtherance of a commercial enterprise in this state a motor vehicle or vehicle combination that has a declared gross weight of more than twenty thousand pounds,” plus hazardous materials carriers, buses for hire, and taxis, liveries and limousines. Section 28-4033 then sets the amounts:

  • $300,000 for a vehicle with a gross vehicle weight of 20,001 to 26,000 lbs
  • $750,000 for a vehicle with a gross vehicle weight of more than 26,000 lbs
  • $5,000,000 for large cargo tanks, Class A and B explosives, poison gas and specified radioactives, and $1,000,000 for oil and other listed hazardous materials and wastes
  • Passenger vehicles by seating capacity: $5,000,000 at 16 or more, $750,000 from 9 to 15, with $300,000 uninsured motorist coverage in each case

That $300,000 bracket at 20,001 lbs has no federal counterpart. The federal schedule at 49 CFR 387.9 has no row for it. So a 22,000 lb straight truck doing Arizona intrastate work carries a state-mandated $300,000 floor while sitting below the 26,001 lb line at which Arizona’s commercial motor vehicle definition, and with it the safety regulations, begin. Two different trigger points, and conflating them is how a small fleet ends up mispriced or non-compliant. If you lease equipment, note also that section 28-4033(B) makes the lessor responsible for either covering the lessee under its own policy or requiring the lessee to meet the requirement.

The safety rules apply intrastate, and Arizona grants no hours-of-service relief. Rule R17-5-202 of the Arizona Administrative Code incorporates 49 CFR parts 40, 379, 382, 383, 385, 390, 391, 392, 393, 395, 396, 397 and 399, and applies them “to all intrastate and interstate motor carriers operating in Arizona and persons operating a commercial motor vehicle.” Many states carve out intrastate drivers from Part 395. Arizona does not. There is no 12-hour intrastate rule here and no intrastate hours-of-service variance — an Arizona intrastate fleet runs on the full federal hours-of-service and ELD regime, exactly like a long-haul carrier. If someone has told you otherwise, they are describing a different state.

Two Arizona modifications do exist. A driver may be 18 for intrastate work not involving reportable hazardous substances, manifested hazardous waste or placardable quantities, against 21 for interstate. And Arizona operates its own intrastate medical waiver for commercial driver licence holders, including alternative physical qualification standards for the loss or impairment of limbs, under rule R17-5-208.

If you tow, your regulator is the Department of Public Safety, not ADOT. Tow truck companies and agents register with DPS under title 13, chapter 3 of the Administrative Code. Registration requires the company to “obtain and keep in effect at all times the minimum limits of financial responsibility required by A.R.S. §§ 28-4009, 28-4032, 28-4033, 28-4131, and 28-4135, as applicable, for each tow truck owned, leased, or operated by the company,” to submit proof of financial responsibility naming the insured, insurer, policy number, expiry and amount of coverage, and to file a new application within 10 calendar days of any change. The rules also set detailed equipment standards by truck class.

Two things we will say plainly rather than guess at. Arizona prescribes no tow-truck-specific dollar figure — the tow rules incorporate the ARS limits by reference, so a heavy wrecker over 26,000 lbs sits at $750,000, a 20,001–26,000 lb unit at $300,000, and a light-duty unit at or under 20,000 lbs falls back to the general $25,000 / $50,000 / $15,000 financial responsibility floor. And Arizona prescribes no on-hook or garagekeepers minimum at all. That is not a gap you should be comfortable with: on-hook is the coverage that pays for the customer’s vehicle, and no state minimum means the only limit protecting you is the one you chose.

Arizona is restrictive on longer combinations. Section 28-1095 caps a vehicle including its load at 40 feet, a semitrailer at 57 feet 6 inches, and trailers in certain combinations at 28 feet 6 inches. Permits for a third trailer are confined to narrow geographic strips — an interstate connecting two states where both permit such combinations and the highway does not exceed 40 miles between them, a state route within four miles of and extending to the border of an adjacent state that permits them, or a route through an Indian reservation within 20 miles of the border. In practical terms Arizona does not allow general-purpose triples or turnpike doubles across its network, which is a meaningful contrast with Nevada next door.

Fees and fuel. Arizona stacks several charges most states do not. The use fuel tax is 26 cents per gallon for a use class vehicle — a truck tractor, truck or passenger-carrying vehicle over 26,000 lbs declared gross weight or with more than two axles — and 18 cents for light class. Gross weight fees under section 28-5433 run from $7.50 up to $918 a year by declared gross weight, halved for farm vehicles. And a separate motor carrier fee under section 28-5854 starts at 12,001 lbs and runs from $64 to $800 a year. ADOT’s own summary of an IRP bill lists “registration fee, vehicle license tax, commercial registration fee, weight fee, motor carrier fee, use fee and air quality diesel fee.” Budget for the stack, not for one line.

UCR, annually. Unified Carrier Registration renews every year with your base state, at a fee set by fleet size in six brackets. The amounts are reset by rulemaking most years, so the live table linked in the sources is the only version worth quoting.

What moves an Arizona premium

In rough order of how much they matter: loss history, radius of operation, commodity, driver experience and MVRs, and the limits you actually choose above the statutory floor. Arizona adds three. Cross-border work is rated differently from domestic — the exposure is equipment, terminals and theft as much as driving. Heat drives tyre, reefer and cargo losses in the low desert. And I-40 winter is a real severity exposure that carriers underestimate because of the state’s reputation.

Because Arizona grants no intrastate hours-of-service relief, an Arizona intrastate fleet’s ELD data is fully comparable to a long-haul carrier’s — which cuts both ways at renewal. Two things are close to non-negotiable with underwriters: a real driver qualification file and telematics you can produce data from.

Arizona trucking insurance questions we get

Do you have an office in Arizona?

No. We have one staffed office, in Frisco, Texas, and we are licensed to write Arizona risks from it. For commercial trucking that matters less than people expect: filings are electronic, claims are handled by the carrier’s adjusters wherever the loss happens, and you will be talking to the same agent every time rather than whoever is at a local desk that day.

Do I need Arizona intrastate operating authority?

There is no such credential for property carriers. You need a USDOT number — ADOT sets the intrastate trigger at more than 26,000 lbs GVWR — and you need to meet the section 28-4033 liability minimum for your weight. Arizona-only carriers do not get a New Entrant safety audit.

My truck is 22,000 lbs. What applies to me?

Insurance does, at $300,000, because section 28-4032 reaches down to more than 20,000 lbs declared gross weight. The safety regulations mostly do not, because Arizona’s commercial motor vehicle definition starts at 26,001 lbs for intrastate work. Those are genuinely two different lines and this is the weight band where people get it wrong.

Do Arizona intrastate drivers get relaxed hours of service?

No. Part 395 applies to intrastate carriers unmodified. This is one of the more common pieces of bad advice we hear repeated, usually by someone who has confused Arizona with a neighbouring state.

How much on-hook coverage does Arizona require for tow trucks?

None. There is no Arizona on-hook or garagekeepers minimum. That makes it a limit you have to choose deliberately rather than one a rule chooses for you, and it is worth an actual conversation about what you tow and what it is worth.

I am based in Texas but I run loads into Arizona. What applies?

The federal rules apply to the interstate movement, at $750,000 or higher. Arizona’s own weight and motor carrier fees and its port-of-entry checks apply to your equipment regardless, and its length limits govern what you may pull inside the state.

Talk to an Arizona agent about your operation

We will tell you plainly which filings you actually need rather than selling you all of them, and if your current limits do not match the loads you are moving we will say so. Call 469-252-4001 or request a commercial trucking quote.

The requirements above are summarised from the published sources listed below, on the dates shown. Rules and fee schedules change and nothing here is legal advice — check the primary source or ask us before you file.

Sources

  • Arizona Revised Statutes, section 28-4032 — Persons subject to financial responsibility requirements — the “declared gross weight of more than twenty thousand pounds” trigger, and the hazardous materials, bus, taxi, livery and limousine categories. Checked 14 September 2026.
  • Arizona Revised Statutes, section 28-4033 — Financial responsibility requirements — the $300,000 bracket at 20,001 to 26,000 lbs, $750,000 over 26,000 lbs, the $1 million and $5 million hazardous materials tiers, the passenger seating-capacity amounts with $300,000 uninsured motorist coverage, and the lessor’s obligation at subsection B. Checked 14 September 2026.
  • Arizona Revised Statutes, section 28-5201 — the definition of a commercial motor vehicle at 26,001 lbs or more for intrastate commerce and 10,001 lbs or more for interstate; and section 28-4009 — the general $25,000 / $50,000 / $15,000 financial responsibility floor. Checked 14 September 2026.
  • Arizona Administrative Code, title 17, chapter 5 — Department of Transportation, Motor Vehicle Division — rule R17-5-202 incorporating the Federal Motor Carrier Safety Regulations and applying them to all intrastate and interstate motor carriers operating in Arizona, rule R17-5-204’s minimum driver age of 18 for intrastate operation, and rule R17-5-208’s intrastate medical waiver. Checked 14 September 2026.
  • Arizona Department of Public Safety, Tow Truck Regulations, Arizona Administrative Code title 13, chapter 3 — rule R13-3-801’s requirement that a tow truck company keep in effect the ARS financial responsibility limits for each tow truck, the proof-of-insurance particulars, and the 10-day notification of changes. Checked 14 September 2026.
  • Arizona Revised Statutes, section 28-1095 — Vehicle length; exceptions; permits — the 40-foot, 57-foot-6-inch and 28-foot-6-inch limits, and the geographic conditions confining third-trailer permits to short border-adjacent segments. Checked 14 September 2026.
  • Arizona Revised Statutes, section 28-5606 — the 26 cents per gallon use fuel tax for use class vehicles; section 28-5433 — the gross weight fee schedule from $7.50 to $918 and the farm vehicle halving; and section 28-5854 — the motor carrier fee schedule from $64 to $800 beginning at 12,001 lbs. Checked 14 September 2026.
  • Arizona Department of Transportation, Commercial Vehicle Registration, New Entrant Program FAQ and Port of Entry Locations — the 10,000 lb interstate and 26,000 lb intrastate USDOT triggers, the intrastate exemption from the New Entrant safety audit, and what Arizona’s ports of entry check. Checked 14 September 2026.
  • 49 CFR Part 387, Minimum Levels of Financial Responsibility for Motor Carriers — the section 387.9 limits and the MCS-90 endorsement at section 387.7. Checked 14 September 2026.
  • FMCSA, Form BOC-3, Designation of Agents for Service of Process — an agent for every state operated in or through, one form on file, and filing by a process agent for carriers with commercial motor vehicles. Checked 14 September 2026.
  • Unified Carrier Registration Plan, Fee Brackets — the six fleet-size brackets and the annual rulemaking that resets the amounts. Checked 14 September 2026.