Motor carrier classes by state
Connecticut does not ask how many axles are under a dump truck and then hand back a number from a bridge table. It asks what the truck is — two axles, three axles, three axles in combination, four or more, four or more stretched to twenty-eight feet — and gives each shape a fixed gross ceiling. Configuration is the variable that matters here, and it is chosen when the truck is bought.
The gross weight ladder in C.G.S. § 14-267a (b) is the shortest useful description of the Connecticut aggregate business. A two-axle vehicle stops at thirty-six thousand pounds. A three-axle vehicle stops at fifty-three thousand eight hundred. A three-axle combination of vehicle and trailer or semitrailer gets fifty-eight thousand four hundred. Four or more axles reaches sixty-seven thousand four hundred, and only when the distance between the first and last axle is not less than twenty-eight feet does the ceiling move to seventy-three thousand.
Those are not permit levels and they are not seasonal. They are the everyday legal maximum for the shape of truck an operator already owns, which means the single largest commercial decision on a Connecticut dump account — how much a unit can bill per trip — was made at the dealership rather than at a scale house or a permit counter.
Two further provisions run underneath the ladder and change how it should be read. The first is a ceiling on the ceiling: subsection (b) caps axle and gross weight at the lesser of the manufacturer’s axle weight rating, the manufacturer’s gross vehicle weight rating, or the statutory limits. A truck whose plate rating comes in below the statutory number is bound by the plate, and the statute never lifts it. The second is that Connecticut writes whole vehicle classes out of § 14-267a by name — construction vehicles in § 14-269, refuse vehicles in § 14-269a — rather than permitting them around it.
For an underwriter, that combination produces an unusually legible account. The registration, the manufacturer’s ratings and the axle count together fix what each unit may legally carry, and a Connecticut operator who is regularly loading past that has a documentation problem, not a judgment call.
Running Connecticut construction hauls under § 14-269? Send the axle counts and the manufacturer’s ratings with the schedule — in Connecticut those two numbers decide which statute a unit is even operating under.
Subsection (b) of § 14-267a opens with a lesser-of test before it reaches any number at all: axle weight and gross weight, including load, may not exceed the lesser of the manufacturer’s axle weight rating, the manufacturer’s gross vehicle weight rating, or the limits that follow. The statutory ladder is therefore a cap, never an entitlement. A tri-axle whose builder rated it below fifty-three thousand eight hundred pounds is a tri-axle that cannot legally reach fifty-three thousand eight hundred pounds, and nothing in the section changes that.
The axle rule under the ladder has a spacing twist worth knowing before an operator specs a lift axle. Subdivision (1) allows twenty-two thousand four hundred pounds on a single axle, but where axles are spaced less than six feet apart the allowance drops to eighteen thousand pounds on each axle. Adding a close-coupled axle to a Connecticut dump body therefore does not add its full nominal capacity — it changes the rule that applies to both axles in the pair.
Two equipment allowances sit alongside the ladder and are easy to miss because they live in their own sections. Under § 14-267c, a commercial motor vehicle carrying an auxiliary power or idle reduction technology unit gets a weight tolerance exemption equal to the actual weight of the unit but not exceeding five hundred fifty pounds, a figure raised from four hundred pounds by P.A. 13-271 effective July 1, 2013. Under § 14-267d, added by P.A. 24-20 § 41 effective July 1, 2024, a commercial motor vehicle powered primarily through the use of an electric battery is granted a two-thousand-pound exemption from the same limits. Both are granted by the enforcement officer at the roadside rather than by application, and the first of them requires written certification of the unit’s weight and proof that it is fully functional at all times.
Registered weight is the last constraint, and it is independent of the rest. Subsection (e) forbids operating a commercial motor vehicle when the combined weight of vehicle and load exceeds the gross weight as registered with the Department of Motor Vehicles, the tire capacity or the axle load, with an eighty-thousand-pound outer bound, whichever is the lesser. A Connecticut unit therefore clears four separate tests — plate rating, statutory ladder, tire capacity and registered weight — and is bound by whichever comes in lowest.
Most states handle construction hauling with an exception written into the weight section. Connecticut handles it by switching the weight section off. Subsection (a) of § 14-269 provides that the provisions of § 14-267a “shall not apply” to a four-wheeled motor vehicle equipped with pneumatic tires that is engaged in construction work or in supplying or transporting materials or equipment for public or private construction projects and that is operating on a highway or bridge within twenty-five miles of the project. Subsection (b) then supplies the only ceiling such a vehicle has: forty thousand pounds gross, including its load.
Subsection (c) does the same thing for a larger machine on narrower terms. The gross vehicle weight and wheel base limitations of § 14-267a do not apply to a four-axled motor vehicle equipped with pneumatic tires engaged in the same construction work, and subsection (d) caps that vehicle at seventy-three thousand pounds. Note what does and does not move: for the four-axled vehicle the exemption reaches gross weight and wheelbase, not the axle rule, and there is no twenty-five-mile radius attached to it at all. The radius belongs to the four-wheeled provision.
The Commissioner of Transportation keeps a hand on the four-axled category that has no analogue elsewhere in the chapter. Under subsection (c) the Commissioner “may restrict or prohibit by signs, legal notices or direct notice the highways or bridges which may be used by such vehicles.” Direct notice means an operator can be told, individually and in writing, that a route is closed to its four-axled construction units — a restriction that leaves no roadside artifact for a driver to see and lands entirely on the office that receives it.
The consequences of getting it wrong are borrowed rather than invented. Subsection (e) makes a violation of the forty-thousand or seventy-three-thousand-pound ceilings subject to the penalties in § 14-267a (f), and subsection (f) makes the owner liable for all damages a highway or bridge sustains as a result. Subsection (g) lets the Commissioner of Motor Vehicles require special registration and issue distinguishing number plates for vehicles subject to the section, which is why a Connecticut construction fleet can look different on paper from the same trucks registered as ordinary commercial units. The section carries its current shape from Oct. Sp. Sess. P.A. 83-1 § 2, which added the penalty subsection, back to P.A. 80-71 § 26, which narrowed subsections (c) and (d) from “four-or-more axled” to “four axled” vehicles.
Connecticut’s willingness to name a vehicle class and legislate for it directly shows up once more next door. Under § 14-269a, added by P.A. 86-125, a refuse collection vehicle may exceed the § 14-267a rear axle limits by up to seven thousand pounds provided the combined weight on the rear axles does not exceed forty-four thousand five hundred pounds, and not on the interstate system. A mixed fleet running roll-offs and aggregate is under two statutes on the same street.
The single most underweighted Connecticut requirement on a dump account is not a weight rule at all. C.G.S. § 13b-415, added by P.A. 06-130 § 26 effective July 1, 2006, provides that no motor carrier as defined in 49 CFR 350.105 or 49 CFR 390.5 shall authorize or employ any person to operate a motor vehicle registered or required to be registered in Connecticut with a gross vehicle weight rating or gross combination weight rating of eighteen thousand one or more pounds without two things: an on-the-road skills test performed in that motor vehicle, and a written certification, signed and dated by the motor carrier, that the person possesses the skills, capability and fitness to operate the vehicle safely.
Read the threshold. Eighteen thousand one pounds sits far below the twenty-six-thousand-one-pound line where a commercial driver’s license becomes federally necessary, which means the duty reaches small single-axle dumps, service trucks and pickups pulling loaded trailers that no one on the yard thinks of as regulated equipment. Read the object as well: the test must be performed in that motor vehicle. A driver certified on a tandem has not been certified on the tri-axle he is put in the following week.
This is a documentation duty with a plaintiff-side afterlife. A signed, dated certification for every driver on every vehicle class is either in the file or it is not, and its absence is discoverable in exactly the cases where a Connecticut aggregate hauler is most exposed. It sits directly on the auto liability side of a program rather than the fleet-management side.
It is also, in practical terms, the main thing Connecticut asks of a for-hire aggregate hauler. The state’s motor carrier chapter was narrowed by P.A. 95-126 effective July 1, 1995 so that the certificate of public convenience and necessity in § 13b-389 and the contract carrier permit in § 13b-398 apply to carriers of household goods rather than to carriers of property generally. Section 13b-415, which speaks to every motor carrier without regard to commodity, still binds.
We place Connecticut dump and aggregate accounts, including four-axled construction fleets operating under § 14-269 and mixed operations running both roll-off and aggregate units.
Connecticut’s weight postings are keyed to what a structure will carry rather than to what the subgrade is doing in March, and the statutes reflect that. Under C.G.S. § 13a-121, when the load-carrying capacity of a bridge is such that it will not safely carry a vehicle within the weights specified in § 14-267a, the authority having control of the bridge “shall maintain notice at each end of such bridge legible at a distance of fifty feet, stating the maximum weight of vehicle which such bridge will carry safely.” The fifty-foot legibility standard is a real element and courts have treated it as one; the section’s own annotation records a case in which, read with the reckless driving statute, the absence of evidence that a sign was legible at fifty feet defeated the prosecution.
There is an appeal, and it runs uphill rather than sideways. Section 13a-89 lets any person appeal to the Commissioner of Transportation from the restriction imposed by a posting. On appeal the Commissioner inspects the bridge and may, after notice and hearing, order the authority controlling it to increase its capacity to the extent public convenience and necessity require. If that authority fails to make the necessary repairs or reconstruction within sixty days of notice, the Commissioner may do the work and the authority is liable for the cost. A hauler whose only route to a pit crosses an under-posted town bridge has a statutory path that does not depend on the town’s budget cycle.
The penalty for ignoring a posting is not an infraction. Section 14-298a, as amended by P.A. 21-175 § 3, makes it unlawful to operate or move a motor vehicle over, on, through or under a bridge or structure if the weight of the vehicle and load exceeds the posted weight limit, and sets the fine at not more than one thousand dollars for a first offense and not more than two thousand five hundred dollars for a subsequent offense.
And then Connecticut does something almost no other state does: it points the liability in both directions. Section 13a-151 (a) makes the owner of a vehicle that crosses or attempts to cross a posted bridge at a gross weight in excess of the posted limit liable to the maintaining authority for damage to the structure. Subsection (b) then provides that the authority having control of the bridge “shall be responsible for any damage sustained by reason of the passage of any vehicle having a gross weight not in excess of the maximum weight prescribed in the notice,” provided the vehicle was not operated above the posted speed limit while crossing.
That second limb is the one to carry into a claim. A loaded Connecticut dump truck at or under the posted number, at or under the posted speed, that is damaged by the structure it was invited onto has a statutory claim against the bridge authority — a recovery route that sits alongside physical damage coverage rather than inside it, and one that depends on evidence of the posted number, the actual gross and the speed at the moment of crossing. P.A. 21-175 § 2, effective July 12, 2021, rewrote subsection (a) to replace “stated maximum safe load” with “posted weight limit” and to delete the language treating the crossing as reckless driving.
Connecticut prices overweight by how far over, not by a flat rate per pound, and the bands climb steeply. Under § 14-267a (f)(2), a violation of not more than five percent of the gross or axle limits draws three dollars per hundred pounds of excess; more than five and not more than ten percent draws five dollars per hundred pounds or a fifty-dollar minimum; and the ladder continues through six, seven, ten and twelve dollars per hundred pounds to fifteen dollars per hundred pounds, with a one-thousand-dollar minimum, for a violation of more than thirty percent.
Above fifteen percent the consequences stop being financial. Subdivision (f)(3) requires the court to note on the record any conviction for an overweight violation in excess of fifteen percent of the gross weight limits with respect to a vehicle of eighteen thousand pounds gross vehicle weight or more, and to transmit that information to the Commissioner of Motor Vehicles. On a third or subsequent such conviction in a calendar year the Commissioner may schedule a hearing, review the registrant’s record — expressly including the frequency of the registrant’s commercial vehicle operations, the size of the fleet and the culpability, if any, of the shipper — and then either impose a two-thousand-dollar civil penalty or revoke the vehicle’s registration for thirty days and decline to reissue for such further time as the Commissioner deems reasonable.
The culpability-of-the-shipper clause deserves a moment. Connecticut invites the registrant to put the pit or the plant that loaded the truck in front of the Commissioner. That is a contractual question long before it is a regulatory one, and it belongs in the loading and hauling agreements a dump operator signs.
Two more steps sit above that. Subdivision (f)(4) provides that an owner or lessee assessed penalties for an overweight violation in excess of fifteen percent five times in a calendar year is assessed an additional five thousand dollars for the fifth violation and for every subsequent one that year. Subdivision (f)(5) closes the escape hatch: no more than twenty-five percent of any fine may be remitted unless the court finds mitigating circumstances and states them on the record.
Connecticut writes two roadside allowances into § 14-267a that are worth training to, because both of them exist to prevent a paper violation and both of them expire the moment the officer records a weight.
The first is aimed squarely at open-bodied trucks. Subsection (i), inserted by P.A. 85-198, provides that the driver of a vehicle which is weighed may remove from the vehicle any material, “including, but not limited to, sand, debris, ice or snow, which may have accumulated on the outside of such vehicle,” before any official determines that the weight is unlawful. A dump body that has been sitting in a February yard is carrying weight nobody sold and nobody billed, and the statute lets the driver get rid of it first.
The second is a load-shifting allowance with a precise boundary. Subsection (j), as amended by P.A. 94-188, provides that where a vehicle violates an axle weight limit but not a gross weight limit, the official “shall allow the driver to manually shift the load in order to comply with such axle weight limit without penalty.” Gross overweight has to come off the truck; axle imbalance can be walked back into compliance. That distinction is the practical reason a Connecticut dump operator cares about where in the body a loader operator drops the last bucket.
The counterpart is a penalty for not stopping at all. Subsection (k)(2), added by P.A. 88-320, reaches a driver who exits a limited access highway on which a scale is in operation with intent to circumvent the stopping requirement and without a bona fide business purpose, or who simply fails to comply — not less than two hundred fifty dollars and not more than five hundred dollars for a first offense, and not less than five hundred dollars and not more than one thousand dollars for each subsequent offense.
The Connecticut file that matters is short, and almost all of it is documentary rather than narrative. Configuration and ratings set the legal payload; the construction statute decides which rulebook a unit is under; the hiring certifications decide how a serious auto claim will be defended; and the posted-bridge network decides how much of the route mix is discretionary.
Pit and stockpile work sits where a highway auto form stops and a premises form starts, which is why the general liability and workers compensation lines on an aggregate account often move independently of the fleet’s road record. Hoist, body and tailgate damage rarely matches what a physical damage schedule assumed, and an account that also runs machinery or long loads to a job site will find the oversized and overweight exposures priced on a different basis from the aggregate hauls.
The state minimum is a licensing threshold. The program an operator actually needs is built from these lines:
We write dump and aggregate hauling as a named class rather than as an exception to general trucking, and we read each account against the weight and permit regime of the state it operates in. For a Connecticut operator that means starting from what the trucks are actually licensed and configured to carry, sizing physical damage to bodies and hoists rather than to a chassis value, and treating pit, stockpile and job-site work as its own exposure rather than an extension of the highway auto form.
If the operation also runs freight under separate authority, the Connecticut trucking insurance page covers the state’s broader motor carrier picture, and the dump trucking insurance page covers the class mechanics that apply wherever the operator runs.
Sixty-seven thousand four hundred pounds, and seventy-three thousand pounds if the distance between the first and last axle is not less than twenty-eight feet. Both figures come from C.G.S. § 14-267a (b)(5) and (6). They are subject to the lesser-of test at the head of subsection (b), so a unit whose manufacturer’s axle weight rating or gross vehicle weight rating is lower is bound by the rating rather than the statute.
Not always. C.G.S. § 14-269 (a) provides that § 14-267a does not apply to a four-wheeled motor vehicle with pneumatic tires engaged in construction work or supplying a construction project while operating within twenty-five miles of that project, and subsection (b) caps it at forty thousand pounds gross. Subsection (c) separately removes the gross weight and wheel base limitations for a four-axled construction vehicle, which subsection (d) caps at seventy-three thousand pounds.
No. The twenty-five-mile radius appears only in § 14-269 (a), which governs four-wheeled vehicles. Subsections (c) and (d), which cover four-axled construction vehicles, contain no distance limit. What they do contain is a routing power: the Commissioner of Transportation may restrict or prohibit by signs, legal notices or direct notice the highways or bridges those vehicles may use.
Under C.G.S. § 13b-415, added by P.A. 06-130 § 26 effective July 1, 2006, a motor carrier may not authorize or employ anyone to operate a vehicle registered or required to be registered in Connecticut with a gross vehicle weight rating or gross combination weight rating of eighteen thousand one or more pounds without an on-the-road skills test performed in that vehicle and a written certification, signed and dated by the carrier, of the person’s skills, capability and fitness.
C.G.S. § 13a-121 requires the authority controlling the bridge to maintain notice at each end, legible at a distance of fifty feet, stating the maximum weight the bridge will safely carry. Any person may appeal that restriction to the Commissioner of Transportation under § 13a-89; the Commissioner inspects and may order the controlling authority to increase capacity, and may do the work at that authority’s cost if it is not done within sixty days.
Yes, and that is unusual. C.G.S. § 13a-151 (b) makes the authority having control of a bridge responsible for damage sustained by reason of the passage of a vehicle whose gross weight did not exceed the posted maximum, provided the vehicle was not operated above the posted speed limit while crossing. Subsection (a) runs the other way, making the owner of an over-posted vehicle liable to the authority for damage to the structure.
C.G.S. § 14-267a (f)(2) charges three dollars per hundred pounds of excess up to five percent over, rising through the bands to fifteen dollars per hundred pounds with a one-thousand-dollar minimum above thirty percent. Beyond fifteen percent on a vehicle of eighteen thousand pounds or more, subdivision (f)(3) sends the conviction to the Commissioner of Motor Vehicles, and a fifth such violation in a calendar year adds five thousand dollars under subdivision (f)(4).
Yes, where gross weight is legal. C.G.S. § 14-267a (j) requires the official to allow the driver to manually shift the load to comply with an axle weight limit without penalty when the vehicle violates an axle limit but not a gross limit. Separately, subsection (i) lets the driver first remove material such as sand, debris, ice or snow that has accumulated on the outside of the vehicle, before any determination that the weight is unlawful.
Every figure on this page was read at the source below on August 11, 2026, with the effective date of the version read. Treat each as current as of that date rather than as permanent.
Send the declared or registered weights alongside the axle configurations, and tell us where the material moves from. We will size the program against the work the trucks actually do rather than against a statutory floor.
