How Long Can a Car Hauler Be? 80 or 65 Feet, the Overhang Rules, and How an Oversize Ticket Gets Challenged (2026)

Published October 9, 2026 | TruckerNavi Inc | 14 min read

By the TruckerNavi compliance team, led by Dmitry Borovoy, a New Jersey-licensed insurance producer and author of Safety Manager: From Zero to Expert.

The short answer: your legal length is decided by where your fifth wheel sits, not by how many cars are on the rack. If the fifth wheel is on a drop frame behind and below the rearmost axle of the power unit, you are stinger-steered, and under 49 U.S.C. 31111(b)(1)(G) no State may hold you under 80 feet, with 4 feet of front overhang and 6 feet of rear overhang on top of that. If the fifth wheel sits on the tractor frame over the drives, you are a traditional automobile transporter and 23 CFR 658.13(e)(1) gives you 65 feet plus 3 feet front and 4 feet rear. Height is not a federal question at all: there is no federal height limit, which is why the same load is legal at 14 feet in Texas and illegal the moment it crosses the New Jersey line.

The gap between statute and regulation is where most car-hauler tickets are born. The United States Code says 80 feet. The Code of Federal Regulations still says 75, because it was never amended after Congress moved the number: the FAST Act was signed December 4, 2015 and its amendments took effect October 1, 2015. Below: every number with the section it comes from, which States are tighter and on what parameter, what the citation actually says, and what to photograph before you drive away. This is a breakdown of the rules, not legal advice on your individual citation.

What are the federal length limits for a car hauler?

Federal length rules are not maximums. They are floors on what a State is allowed to impose: no State shall impose an overall length limitation of less than some number. A State may be more generous. It may not be tighter, on the roads where the federal rule reaches.

• Traditional automobile transporter, 65 feet. 23 CFR 658.13(e)(1)(i): no State shall impose an overall length limitation of less than 65 feet on traditional automobile transporters, described in the rule as those with the fifth wheel located on the tractor frame over the rear axle or axles, including "low boys."
• Stinger-steered automobile transporter, 80 feet. 49 U.S.C. 31111(b)(1)(G), added by section 5520 of the FAST Act, Pub. L. 114-94, enacted December 4, 2015 and effective October 1, 2015: a State may not prescribe or enforce a regulation imposing a length limitation of less than 80 feet on a stinger-steered automobile transporter with a front overhang of less than 4 feet and a rear overhang of less than 6 feet.

FHWA is equally explicit about what did not change. Answer 11, revised December 14, 2016, states that the FAST Act did not change the provisions for traditional automobile transporters: 65 feet, front overhang not less than 3 feet, rear not less than 4. Two frames, two sets of numbers, one segment.

What counts as an automobile transporter, and why does the word decide your length?

Everything here is triggered by one defined term. 23 CFR 658.5 defines an automobile transporter as any vehicle combination designed and used specifically for the transport of assembled highway vehicles, including truck camper units. The statute at 49 U.S.C. 31111(a)(1) says the same with "specifically" struck out, and adds that an automobile transporter may carry general freight on a backhaul if it meets the weight limits for a truck tractor and semitrailer combination.

Why it matters: an automobile transporter is specialized equipment under 23 CFR 658.13(e). Specialized equipment gets the overhang allowance and the special length floors. Everything else gets 23 CFR 658.13(a), (b) and (c), which contain no overhang allowance whatsoever, and whose only length floor is the 48-foot semitrailer of 23 CFR 658.13(b)(1).

One more misunderstanding worth killing here. FHWA's Answer 9 confirms that striking the word "specifically" from the statutory definition did not change the design characteristics of an automobile transporter. The purpose of that edit was to let the equipment take a backhaul instead of running empty. It handed nobody a new dimensional right.

What exactly is a stinger-steered combination?

One sentence in 23 CFR 658.5 is worth 15 feet of length and 2 feet of rear overhang to you: "Stinger-steered combination. A truck tractor semitrailer wherein the fifth wheel is located on a drop frame located behind and below the rear-most axle of the power unit."

Three elements, all true at once: the fifth wheel is on a drop frame, not the tractor's main frame rail; that drop frame is behind the rearmost axle of the power unit; and it is below that axle. A stretched frame with the fifth wheel slid all the way back is still conventional if the plate sits above the drives. The word in the rule is "below." Florida wrote the identical definition into Florida Statutes 316.515(3), so in a Florida case you do not have to prove the definition through the CFR at all.

The status carries across equipment types. FHWA's Answer 13 applies the same 80-foot floor and the same 4-foot and 6-foot allowances to stinger-steered boat transporters, while Answer 14 leaves traditional boat transporters at 65 feet with 3 and 4 under 23 CFR 658.13(e)(2).

How much overhang is legal in front and at the rear?

Overhang is measured separately from length, and that is the single most valuable fact in this article. 23 CFR 658.13(e)(1)(ii): all length provisions regarding automobile transporters are exclusive of front and rear cargo overhang. Overhang is not carved out of your 65 or 80 feet, it is added on top. FHWA restated this in Answer 5: the 4-foot front and 6-foot rear allowances are in addition to the overall 80 foot length allowance.

In practice that means the correct measurement is three numbers, not one: vehicle length with the flippers retracted, front overhang, rear overhang, each compared with its own floor. One tape from front bumper to the rearmost point of the load, compared with 80 feet, is not the procedure the regulation describes.

Read the last two rows again. A combination that is not specialized equipment gets no overhang allowance at all, and state overhang statutes then apply in full. In Texas that means Transportation Code 621.206(a): no load extending more than three feet beyond the front or, except as permitted by other law, more than four feet beyond the rear.

Do the flippers and ramps count toward my length?

Only when they are empty. This is the cheapest ticket in the business and the easiest one to stop taking. 23 CFR 658.13(e)(1)(ii): extendable ramps or "flippers" used to achieve the allowable 3-foot front and 4-foot rear cargo overhangs are excluded from the measurement of vehicle length, but must be retracted when not supporting vehicles. FHWA added the stinger-steered version in Answer 15, dated August 9, 2018: flippers used to achieve the 4-foot front and 6-foot rear overhangs are excluded from the 80-foot measurement, but such ramps must be retracted when not supporting vehicles.

The wording is deliberate. The exclusion attaches to the function, not to the hardware. A flipper holding a wheel is part of the loading mechanism. The same flipper hanging in the air is just steel sticking out the back, and steel sticking out the back gets measured.

Loaded flipper: excluded from length. Empty flipper hanging out: measured. A deadhead leg with the rear flipper down turns a legal truck into an over-length one for the price of thirty seconds of work at the last drop.

Related exclusions in 23 CFR 658.16 and appendix D are sometimes measured by mistake: loading and unloading devices are excluded up to 24 inches beyond the rear, resilient bumpers up to 6 inches, non-property-carrying devices up to 3 inches, aerodynamic devices up to 5 feet beyond the rear, and all devices at the front of a semitrailer are excluded. Two conditions travel with every one of them: 23 CFR 658.5 says a length exclusive device shall not be designed or used to carry cargo, and 23 CFR 658.16(c) says each exclusion allowance is specific and may not be combined with other excluded devices.

Is there a federal height limit for a car hauler?

No, and one sentence explains the entire pattern of height tickets in the segment. FHWA states it in Federal Size Regulations for Commercial Motor Vehicles, publication FHWA-HOP-04-022: there is no Federal vehicle height requirement for commercial motor vehicles, so States may set their own, and most height limits range from 13 feet 6 inches to 14 feet, with exceptions for lower clearance on particular roads. Note the vintage of that brochure, October 2004: it is authoritative on height, which has not changed, and out of date on the stinger-steered length figure, which has.

Length and width have federal floors a State may not go under. Height has nothing, so every inch of your top deck is governed by whichever vehicle code your wheels are in at that moment. Three of those codes deserve attention.

• Texas. Transportation Code 621.207(a) allows 14 feet. Subsection (b) puts a personal duty on the operator of anything over 13 feet 6 inches to ensure the vehicle passes every vertical clearance in its path without touching the structure. Subsection (c) makes the owner strictly liable for damage to a bridge, underpass or similar structure caused by vehicle height, with exactly four exceptions: the vehicle was stolen; the posted clearance was lower than the actual clearance; the vehicle was moving under the immediate direction of a law enforcement agency; or it was moving under a permit.
• New York. VTL 385(2) caps height at thirteen and one-half feet, then adds that damage to highways, bridges or highway structures from a vehicle exceeding thirteen feet in height, where the excess height is the proximate cause, shall be compensated by the owner and operator. That liability trigger sits six inches below the State's own legal maximum.
• California. Vehicle Code 35250 allows 14 feet, but adds that anything over 13 feet 6 inches shall only be operated on those highways where deemed to be safe by the owner of the vehicle. The statute moves the route-clearance decision onto the carrier by name.

Where do the federal numbers apply, and where does state law take over?

23 CFR 658.13(a) limits the federal length provisions to truck tractor-semitrailer and truck tractor-semitrailer-trailer combinations, and only when in use on the National Network or in transit between those highways and terminals or service locations under 23 CFR 658.19. The Network is the Interstate System plus the routes in appendix A to part 658, roughly 200,000 miles of highway.

What 23 CFR 658.19 guarantees off the Network:

• No State may enact or enforce any law denying reasonable access between the Network and terminals and facilities for food, fuel, repairs, and rest, 658.19(a).
• No State may deny access within 1 road-mile of the Network by the most reasonable and practicable route, except for specific safety reasons on individual routes, 658.19(d).
• An access request beyond that mile is automatically approved if the State does not act on it within 90 days of receipt, 658.19(i)(2)(ii)(B), and denial must rest on a safety and engineering analysis of the route.
• Vehicle dimension limits shall not be more restrictive than Federal requirements, 658.19(g), and blanket restrictions on 102-inch wide vehicles may not be imposed, 658.19(f).
• A State may also allow access without any request at all for semitrailers with a kingpin distance of 41 feet or less, 658.19(i)(2)(i)(C).

What it does not give you: FHWA's Answer 6 states that automobile transporters have reasonable access to the Network, but States may continue to regulate their length when no portion of a movement is on the Network. A pure secondary-road run is a state-law question end to end.

Width is federal and simple: 23 CFR 658.15(a) says no State shall impose a width limitation of more or less than 102 inches, or 2.6 meters, on the National Network, with Hawaii allowed 108. Note "more or less": width is the one dimension where the federal number is both floor and ceiling.

Parameter, federal floor, where it is stricter, what the scale asks for

This is the working table. Print it, put it in the door pocket, and treat the last column as a pre-trip habit rather than a post-ticket scramble.

Which states actually bite, and on what?

Not evenly, and not on the same parameter. Here is what the statutes say where our clients run the most miles.

What does the citation actually say, and who wrote it?

Almost never a federal rule. Size limits do not live in the Federal Motor Carrier Safety Regulations. They live in 23 CFR part 658, which binds States, and in the state vehicle codes that implement it. So the paper in your hand will name state law:

• New York: a subdivision of VTL 385, the paragraph depending on whether the issue is width, height, single-vehicle length or combination length.
• New Jersey: 39:3-84, with the dimensional violation enforced under C.39:3-84.3.
• Florida: 316.515, with a subsection pointing at width, height, length or load extension.
• Texas: a section from chapter 621 of the Transportation Code, subchapter C.

What else has to be on that document, and what you should read before signing anything: the measured figure, the method, and the reference point. A citation reading "over length" with no number and a citation reading "measured 82 feet 6 inches, front bumper to rearmost point of load, by laser" are two different documents. The second can be checked. The first cannot be checked by anyone, including the officer who wrote it, six months later.

Separate track if the stop was a roadside inspection rather than a size check. Then an inspection report exists, and any FMCSR violations on it are a different animal: warning flags under 49 CFR 393.87, securement, lighting. That is the part that reaches your safety data. How a roadside stop becomes a record is broken down in DOT inspection levels explained, and the everyday version of the same problem is in the most common DOT violations and how to avoid them.

What evidence do I collect before I leave the scale?

All of it has to be gathered while the truck is still in the configuration that was measured. Once you drive away, the configuration is gone and so is your ability to prove what it was.

1. Photograph the tape in place, with the reading legible. Not the tape on the ground: the tape stretched along the vehicle. Two frames, one wide, one tight on the number.
2. Photograph flipper and ramp positions. Retracted or extended, loaded or empty. This single photo decides the flipper question.
3. Photograph the fifth wheel from the side. The drop frame and its position relative to the rearmost drive axle, showing that it sits below that axle. This is the difference between 80 feet and 65.
4. Photograph each overhang separately. Front bumper to the foremost point of the head-rack car; trailer rear to the rearmost point of the back car. Overhang is measured separately under 23 CFR 658.13(e)(1)(ii), so it needs separate evidence.
5. Keep the manufacturer specification and the bill of lading in the cab. The build sheet states the configuration and as-built dimensions. FHWA notes in Answer 4 that law enforcement may review the bill of lading for the part of a trip preceding a backhaul.
6. Record the route. Interstate or not, distance to the nearest Network route, the terminal you were traveling to. The route is what makes 23 CFR 658.19 relevant or irrelevant.
7. Record the measurement method and the load plan while you remember them. Laser, wheel or tape, from what point, flipper included or not, mirrors included or not on a width check. And which car sat where: a citation that turns on 4 inches is a citation about load placement.

How does a length or overhang citation get challenged?

A size citation is a state charge, contested where it was written, on the record that exists. There is no federal appeal and no administrative shortcut, only a short list of factual questions that either have documented answers or do not.

• Was the vehicle stinger-steered? If yes, the floor is 80 feet with 4 and 6, not 75 with 3 and 4. The answer comes from a photograph of the fifth wheel plus the manufacturer specification, not from an argument.
• Was overhang included in the length measurement? If so, it ran contrary to 23 CFR 658.13(e)(1)(ii), which makes automobile transporter length provisions exclusive of front and rear cargo overhang, and to FHWA's Answer 5, which puts the 4 and 6 in addition to the 80.
• Were the flippers supporting vehicles at the time? If yes, excluded. If no, they should have been retracted. You win or lose this on the photograph.
• Was the movement on the Network or reasonable access to it? If yes, 23 CFR 658.19(g) applies and dimension limits shall not be more restrictive than federal requirements. If the whole movement was off the Network, FHWA's Answer 6 says the State may regulate the length.
• Does the state provision cited actually conflict with the federal floor on that road? That is a legal argument rather than a factual one, and it is where a traffic attorney earns the fee.
• Was the equipment specialized equipment at all? If the power unit does not carry vehicles, FHWA Answers 10 and 12 say the overhang allowance never applied, and the honest path is to fix the operation rather than fight the citation.

Two practical notes. The deadline on the citation is the real deadline, and paying it is a plea in most jurisdictions, which forecloses the argument permanently. And if the violation was written on a roadside inspection report, inaccurate data on that report can be challenged through DataQs, a process laid out step by step in our DataQs guide. Two processes, two deadlines, and winning one does not fix the other.

Does an oversize ticket land in my CSA score?

Here is the checkable version. FMCSA publishes every violation used in the Safety Measurement System in SMS Methodology Appendix A, version 3.21, revised May 2026. Search it for an oversize, overweight or size-and-weight code and there is not one. Size limits live in 23 CFR part 658 and in state law, not in the Federal Motor Carrier Safety Regulations, and the SMS scores FMCSR and HMR violations. If you want the mechanics of how those percentiles are built, start with CSA scores explained.

What is in the list, in the Vehicle Maintenance BASIC table, are the flag codes:

The underlying rule, 49 CFR 393.87, requires red or orange fluorescent flags at least 457 mm (18 inches) square on the extremities of a load extending more than 4 inches beyond the sides or 4 feet beyond the rear: one flag if the projecting load is two feet wide or less, two if wider.

The honest summary: a length or overhang citation is a money and court-time problem, not a safety-score problem. A missing flag is the reverse, and only it follows you into a broker's vetting screen. The securement side of a loaded car hauler is in cargo securement rules for 2026, and the paperwork that keeps the rest of the vehicle file clean is in annual inspection and maintenance records.

What do I fix so this stops happening?

1. Know in writing which frame you own. Pull the manufacturer specification for the tractor and the trailer, confirm whether the fifth wheel sits on a drop frame behind and below the rearmost drive axle, and keep the printout in the cab. Every number in this article branches off that one fact.
2. Measure your own truck loaded, once, properly. Overall length with flippers retracted. Front overhang. Rear overhang. Height at the top-deck position you actually load. Write the four numbers on a card and keep it with the registration. You cannot manage a limit you have never measured.
3. Make flipper retraction part of the post-unload routine, not part of the pre-trip. The violation is created at the drop, not at the start of the day.
4. Place tall vehicles by route, not by convenience. Fourteen feet is legal in Texas and California and illegal in New York and New Jersey, and Florida gives automobile transporters 14 feet where it gives everyone else 13 feet 6 inches. The load plan is a compliance decision.
5. Carry flags even if you run stinger-steered. The exemption is narrow and it ends February 15, 2029. Two 18-inch fluorescent flags cost less than one 393.87 violation in your Vehicle Maintenance data.
6. Document the route on every off-Network leg. Address, distance from the National Network, and why. That trail is what gets read against 23 CFR 658.19 later.
7. Photograph before pulling off the scale every time, not only when a ticket is written. A set of photos costs nothing and is the only evidence that survives the truck moving. If a vehicle is placed out of service instead, the recovery path is in vehicle out-of-service recovery.

FAQ

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