Unit File — Paperwork on Trucks and Trailers

Every truck and trailer in your fleet has its own "personnel file" — the Unit File. Registration, Annual Inspection, IRP, Form 2290, Title or Lease. In this chapter I show you how to read a registration from any state, how not to flunk the annual inspection, how to renew through IRP, and what HVUT is. By the end, terms like VIN, GVW, IRP, HVUT, and Decal won't intimidate you, and you'll know exactly which papers belong in the driver's cab.

6.1. Why a Safety Manager has to understand the "hardware"

You're not a mechanic. You don't need to tear down a transmission or diagnose a turbo. But three things stay in your head at all times:

1. What equipment is on your company — models, trailer types, what it hauls.
2. What paperwork each unit has, where it's stored, when it expires.
3. Weight and size limits — so you don't eat an overweight ticket.

The inspector at the scale doesn't care whose fault it is — driver forgot, office dropped the ball, doesn't matter. No registration in the cab — fine on the driver and a hit on the company. Annual Inspection expired — same story. In CSA it lands on the company, not the man behind the wheel.

🫂 Pause. If you've never sat behind the wheel of a semi and a Freightliner and Peterbilt still look the same to you — that's fine. Most of the strong Safety Managers I know came up through the office, not the cab. The difference between a Detroit DD15 and a Cummins X15 won't come up in your work once. You need to read a registration, remember where the Annual Inspection sticker is, and know when what expires. That's one chapter. Keep moving.

6.2. Who's driving American roads

The US heavy-duty market is held by five manufacturers. Memorize them — you'll see these names every day: in registrations, Bills of Sale, lease contracts.

Kenworth and Peterbilt share an owner (PACCAR) but are positioned differently in the market.

Truck classes

Federal classification runs off GVWR (Gross Vehicle Weight Rating) — maximum allowed weight:

• Class 1–3 (Light-duty) — up to 14,000 lbs. Pickups, Sprinter vans.
• Class 4–6 (Medium-duty) — 14,001–26,000 lbs. Box trucks, often no CDL required.
• Class 7–8 (Heavy-duty) — 26,001 lbs and up. Our zone. Class 8 (33,001+) — the classic semi.

Memorize the number: 26,001 lbs. Anything above — you're in FMCSA territory: CDL, Medical Card, IFTA, IRP, ELD, HOS. All the compliance this book covers starts at that line.

6.3. Trailers: which "wagon" for which freight

Quick rundown:

• Dry Van — enclosed dry box. The bread and butter. Pallets, boxes, anything non-temp.
• Reefer — refrigerated trailer with a cooling unit. Food, pharma, flowers. The unit burns diesel, breaks down, costs more to run.
• Flatbed — open deck. Building materials, pipe, machinery. Loaded from top or side. Driver needs tarping and strapping skills.
• Step Deck — two-level flat. For freight too tall for a regular flatbed.
• Conestoga — flat or step deck with a sliding tarp system. Flatbed flexibility plus van-style protection.
• Car Hauler — auto transporter. Own rigging, own skills, own niche.

🔵 Track A — Owner. If you're picking where to start — go Dry Van. Simplest entry, lowest risk. Reefer pays better but breaks more often, and any refrigeration failure means spoiled freight = a claim in the tens of thousands. Flatbed pays decent, but without securement experience you'll rack up tickets and damaged freight in the first month.

🟢 Track B — Employed Safety. Know your fleet. A reefer carrier means food-grade freight, sanitation requirements, claim exposure if a unit fails. Flatbed means elevated Load Securement risk in CSA. Know what you're running.

6.4. Weight and axles: where Safety actually gets pulled in

The federal cap for a CMV is 80,000 lbs (about 36 tons). That's gross — freight, fuel, driver, everything.

But 80,000 is just one number. Weight has to distribute correctly across the axles:

• A single axle — no more than 20,000 lbs (23 CFR 658.17)
• A tandem (a pair of axles closer than 96 inches, drive or trailer) — no more than 34,000 lbs for the group (~17,000 per axle)
• Practical target for the front (steering) axle: ~12,000 lbs. That's the tire rating, not federal law.

Your total can be under 80,000, but if a single axle carries 22,000 — you're overweight on that axle. Fine — up to $5,000 per inspection. This comes up regularly.

This isn't bureaucracy, it's physics

Bad weight distribution isn't about the fine. It's about how the truck handles:

• Under braking, freight shifts forward, tractor brakes get overloaded.
• On a long grade — overheating and a runaway rig.
• In a turn — rollover.

Bridge Formula — why "80,000 always" is wrong

Bridge Formula — the math rule limiting the weight of an axle group based on the distance between them. Shorter distance — lower allowed weight. The point is to keep bridges from failing.

The formula:

W = 500 × [(LN / (N−1)) + 12N + 36] W — max group weight, L — distance between outer axles of the group, N — number of axles.

You're not running this by hand. But you need to know it exists and that "we're under 80,000" doesn't always mean "legal." The dispatcher and driver are responsible for the configuration — you're responsible for making sure they know it.

📎 Sample: in the book materials pack, truckernavi.com/en/book.

Overweight / Oversize Permit

If freight exceeds 80,000 or the legal dimensions — you need an Overweight/Oversize Permit for each state on the route. Dispatcher orders it through a permit service, $20–$100+ per state.

⚠️ Who watches the weight Not you. Weight is the dispatcher's responsibility (at planning) and the driver's (at loading — ask for a reweigh, reposition freight). Safety steps in once a ticket or claim has already landed. But you know the limits cold — to run driver training, break down incidents without Googling, and not sign off on nonsense during an audit.

6.5. Registration: what this document is

Registration is issued by the state DMV. It's the proof that the truck or trailer is legally cleared to be on the road. Without it — $1,000+ fine in every state you get stopped.

Term: one year. Expiration dates vary by state.

What's on it (any state)

Open a registration from Florida, Illinois, Pennsylvania, Idaho — same structure:

• Plate Number — the number on the bumper
• VIN — the 17-digit unique truck ID, its "passport"
• Year, Make, Model
• Vehicle Type — truck tractor / trailer
• GVW — maximum allowed gross weight (usually 80,000)
• Registrant / Owner — who it's registered to
• Fuel Type — diesel
• Expiration Date
• IRP Cab Card / Firm Number — IRP number (if interstate)
• DOT Number — sometimes listed
• Responsible for Safety — who carries the compliance

💡 If Registrant and Responsible for Safety are different — the truck is leased. One party owns it physically, the other carries the compliance. Common setup with owner-operators running under a larger carrier.

State examples

Florida. On the registration — a Decal, a sticker with a number and date, stuck on the truck. Usually expires December 31.

Illinois. Everyone expires the same day — March 31. Registration shows a Firm Number (IRP) and a table of states where the truck is authorized to operate, with max gross weight for each.

Pennsylvania. Full cab card with an IRP table, loaded/unloaded weight.

Idaho. You'll see Registrant ≠ Responsible for Safety here.

Where the registration belongs

Original or a clean copy — in the cab, with the driver, always. At a scale or roadside the inspector asks for it — no document means a fine of $50–$500 per state.

📎 Sample: in the book materials pack, truckernavi.com/en/book.

6.6. IRP — the right to operate across multiple states

IRP (International Registration Plan) is an agreement between 48 US states, 10 Canadian provinces, and DC. Simple idea: instead of registering in every state you run through, you register in one — your base jurisdiction — and pay proportionally based on miles in each state.

When IRP is required

If the truck:

• weighs more than 26,000 lbs, OR
• has 3+ axles (regardless of weight), OR
• is a tractor + trailer combination over 26,000 lbs gross,

and crosses state lines — IRP is required.

When it isn't

• Government vehicles
• Charter buses
• Personal RVs
• Trucks running only inside one state (intrastate)

How it ties into truck registration

Until the company is in IRP, you can't register a truck for interstate work. The sequence is:

1. Company applies to IRP in the base state.
2. Gets an IRP Account / Firm Number.
3. Pays Form 2290 (HVUT) — next section.
4. Only then registers each truck, gets plates and cab card.

Timing and fines

Most states use staggered renewal: expiration hits at midnight on the last day of the listed month. No grace period. The 1st of the next month — you're expired.

Fines start on day 11 after expiration. And here's the kicker: the fine can be issued in every jurisdiction the truck passed through while expired. Driver runs PA → OH → IN → IL expired — each state can write its own.

⚠️ Missing IRP renewal is one of the most common disasters at new carriers. Typical scenario. Ivan opens his company in January, runs 10 months smooth. October rolls around — expiration. Ivan's got other things on his mind, no reminder, no Safety yet. Truck gets pulled into a scale in Ohio. $1,500. Two more scales down the road — another $1,500 each. One trip — down $4,500, plus a CSA hit. Put a calendar reminder 60 days before expiration. Not 30, not 14. Sixty. Because the paperwork can take up to two months to clear.

6.7. Form 2290 (HVUT) — federal heavy vehicle tax

HVUT (Heavy Vehicle Use Tax) — federal tax on heavy commercial vehicles. Paid to the IRS once a year on Form 2290.

Who pays

Any truck with GVW 55,000 lbs or higher that runs more than 5,000 miles a year (7,500 for agricultural).

How much

Rate scales with weight class. For trucks 75,000+ lbs (your typical Class 8) — $550 per truck per year. A fleet of 8 — $4,400. A fleet of 100 — $55,000.

When

IRS tax year for HVUT runs July 1 to June 30 of the next year. You have to pay by August 31 of the year the period starts.

💡 Where people trip on the date. In the tax period field on Form 2290 you enter the year the period starts, not your registration renewal year. For the 2024–2025 period — 2024-07. For 2025–2026 — 2025-07.

What goes on the form

• Company name, address
• FEIN — Federal Employer ID
• Filing type: initial / Amendment / Final Return
• Payment method: EFTPS, check, card
• Weight category, amount
• VIN of every truck the tax covers

Missed a truck — file an Amendment Return. Sold it or closed the company — Final Return.

Why Safety needs to know HVUT

Because without a paid Form 2290 the DMV won't renew registration. It's the first document they ask for at renewal. Keep the IRS-stamped Schedule 1 in your Unit File — paper and scan.

6.8. Annual Inspection — yearly vehicle inspection

Annual Vehicle Inspection — required under 49 CFR Part 396. Every truck and every trailer gets a full technical inspection every 12 months.

What gets checked

A qualified mechanic or certified state inspector runs through a standard checklist:

• Brake System
• Coupling Devices — fifth wheel, kingpin
• Exhaust System
• Fuel System
• Lighting / Reflectors — headlights, marker lights, reflectors
• Safe Loading — securement
• Steering Mechanism
• Suspension
• Frame
• Tires — tread, damage
• Wheels & Rims
• Windshield / Wipers
• Emergency equipment — fire extinguisher, first-aid kit, triangles

Who's authorized to do it

A Qualified Inspector — a mechanic with the right training and certification. His name and license number must be on the report. It's on him personally — up to criminal liability if he signs off "OK" on a bad component and an accident follows.

Some states run a government program — then the state inspector issues the report, and storage rules may differ.

The document and storage

The report contains:

• Company / registrant name
• VIN, plate, state
• Inspection date
• Component list — OK / Needs Repair / Fixed
• Notes (fluids, recommendations)
• Inspector's signature and license number

The report is not auto-submitted to FMCSA. It's stored:

• at the service shop/mechanic,
• at the carrier (office or electronic file),
• a copy or sticker/decal with the next inspection date — in the truck cab (or on the frame / inside of the driver's door).

📎 Sample: in the book materials pack, truckernavi.com/en/book.

Cost and time

$50–$150 per unit, 1–3 hours at the shop. Tractor and trailer can go through the same day.

What it costs you to miss it

• No document or sticker in the cab — ticket $50–$500 per state.
• Can't produce the report at a DOT audit — serious violation in Vehicle Maintenance.
• Truck is expired and gets in an accident — insurer is hunting for a reason to deny the claim, court may find company negligence.

🧰 If you're scared: 12 trucks, nobody knows when what expires I know this feeling. You start the job, sit down at the desk, and somewhere out there are 12 trucks, each with its own dates, its own paperwork, and nobody has really been tracking any of it. Your head's spinning. Stop the spin. Step 1. Open a Google Sheet. Columns: Unit #, VIN, Plate, State, Annual Inspection Date, AI Expiration, Registration Date, Registration Expiration, Form 2290 Date. Step 2. Get photos from every driver of the registration and the most recent Annual Inspection. For each truck. Enter the dates. Step 3. In Google Calendar, set reminders 30 days before each expiration. Step 4. At 14 days you message the driver: "your AI expires on [date], get into the shop by [date], send me a photo of the report." Step 5. Got the report — saved the scan — updated the sheet. Cycle. That's it. This isn't the "system of the future." This is the system that kills 80% of the stress in one week. Go do it.

6.9. Renewal: how to extend registration

Most states run the same process. At renewal you need in hand:

What you prepare

1. Form 2290 — paid, with IRS stamp.
2. Miles for the last 4 quarters by state for each truck on the road.
3. Data per truck: VIN, plate, model, year, GVW.
4. Active insurance — Chapter 10.
5. Annual Inspection — current.

About the miles — this is where people blow up

IRP renewal uses a reporting period — the 4 quarters ending 6 months before the new registration year starts.

Example: renewal for 2025 → reporting period is July 1, 2023 to June 30, 2024. That's Q3'23 + Q4'23 + Q1'24 + Q2'24.

For 2026 → July 1, 2024 to June 30, 2025. Same logic going forward.

You pull miles from the IFTA reports (Chapter 8). Aggregate by state, add them up, build the table:

If you're only renewing some of the fleet (the ones whose term is up), you only count miles for those trucks. Makes sense — those are the ones being registered.

Three ways to file

1. State online portal (example: Illinois CyberLink). PIN arrives ~3 months before expiration. Log in, enter miles, pay sales tax and fees. Fast.
2. In person at DMV — drive in, hand over paperwork.
3. Through a permit service or software — they do it for you at $5–$25 per truck.

How long to wait

1 to 2 months for a new cab card. While you wait, the state issues a temporary permit — the driver keeps it in the cab.

💡 During the 2020 pandemic some states delayed renewed registrations up to 6 months and issued extended temporary permits. If something similar happens again — don't panic, but check the dates on the temporary permit every week.

Three renewal scenarios

Ideal. Safety starts 90 days out. Verifies Form 2290, pulls miles from IFTA, confirms active truck list, files online. At 30 days — confirmation. New plates/cab cards arrive on time. Drivers roll with current paperwork.

Typical. Remembered 2 weeks out. Filed online, temporary permit arrived just in time. A couple of drivers got pulled at roadside with the paperwork status unclear — inspector let them go, but a $100 ticket still landed.

Failure. Forgot. Registration expired a month ago. Driver on I-95 through Virginia, scale. Ticket $1,200, truck held, freight not delivered, shipper files a claim. One day — down $3,000+, plus a violation in Vehicle Maintenance / Driver Fitness on CSA.

Don't be scenario three. Calendar + 60 days.

6.10. What physically lives in the cab

Identification Card / Cab Card — the card issued with IRP. Contains:

• Unit number, VIN, plate
• Registrant (company)
• Table of all IRP states with max gross weight for each
• Expiration

This is the first document the inspector at the scale asks to see.

📎 Sample: in the book materials pack, truckernavi.com/en/book.

Full packet in the cab

Checklist of what must be with the driver:

• [ ] Registration / Cab Card (original or clean copy)
• [ ] Annual Inspection Report or current sticker/decal on frame/door
• [ ] Insurance Certificate / Proof of Insurance
• [ ] IFTA License copy + decals on both sides of the cab
• [ ] IRP Apportioned Registration (same cab card)
• [ ] Form 2290 Schedule 1 (copy of paid)
• [ ] Bill of Lading — for each current load
• [ ] Active permits — overweight, NY HUT, Kentucky, Oregon, anything current

All of this is mirrored in your electronic Unit File. Driver lost a paper — you forward a copy in 15 minutes. That's your baseline service, not heroics.

6.11. Where and how to store the Unit File

One folder per truck, one per trailer. Paper or digital — digital is easier. Inside:

• Title (Certificate of Title) — ownership document
• Bill of Sale or Lease Agreement — how the truck came into the company
• Registration — current and prior
• IRP Cab Card — current
• Form 2290 Schedule 1 — recent years
• Annual Inspection Reports — minimum 14 months (federal rule)
• Insurance Certificate for this VIN
• DVIR (Driver Vehicle Inspection Reports) — minimum 3 months
• Maintenance Records — service and repair log
• Accident Reports for this unit, if any

🔵 Track A — Owner (1–3 trucks). Google Drive: one folder per truck. Plus a register spreadsheet with expiration dates. That's enough up to 3 trucks.

🟢 Track B — Employed Safety. If the company already runs a TMS or fleet management software — work in it. If not — the first thing you pitch to the owner is to roll out software. Excel + Google Calendar is the working minimum, but at 15+ trucks you'll drown in it. You need a tool with automatic reminders at 30/14/7 days.

6.12. Five mistakes I've seen most often

Mistake 1. "The Annual Inspection is with the mechanic, he keeps it." — Wrong. The copy goes in your Unit File + driver carries a copy in the cab. At an audit, "it's with the mechanic" is a minus for the company.

Mistake 2. "I took a picture of the registration with my phone, part of the steering wheel is in it." — Retake it. Bad copy = no document.

Mistake 3. "2290 is filed once when you open the company." — No. Every year by August 31. Schedule 1 — in the file, every time.

Mistake 4. "Bought a used truck, it has everything, I don't have to do anything." — Wrong. Change of owner = new Title and Registration. The Annual Inspection on the truck stays valid until its date — don't touch it. Title and Registration — new, in your name.

Mistake 5. "IFTA and IRP are the same thing." — No. IFTA is the fuel tax (Chapter 8). IRP is registration fees. Different programs, different procedures, different payments. You pay both.

⭐ Chapter 6 takeaway

1. Five main manufacturers: Freightliner (40%), Kenworth, Peterbilt, International, Volvo. Class 7–8 (26,001 lbs and up) — FMCSA territory.
2. Main trailer types: Dry Van, Reefer, Flatbed, Step Deck, Conestoga, Car Hauler.
3. Max CMV weight — 80,000 lbs. By axle: single axle ≤ 20,000, tandem group ≤ 34,000 (~17,000 per axle; steer-axle practical target ~12,000 by tire rating). Plus Bridge Formula — a limit based on distance between axles.
4. IRP is required for trucks 26,000+ lbs or 3+ axles running interstate. Renewed annually. Fines start on day 11 of expiration, in every state on the route.
5. Form 2290 (HVUT) — $550/truck/year for 75,000+ lbs, due by August 31. Without it, DMV won't renew registration.
6. Annual Inspection — every 12 months, every truck and every trailer. Report from a certified mechanic, in your file, copy/sticker in the cab.
7. Renewal = Form 2290 + 4 quarters of miles from IFTA + fleet data. Start 60–90 days out.
8. In the cab with the driver, always: Registration, Annual Inspection, Insurance, IFTA license, Form 2290, Bill of Lading. All of it mirrored in the Unit File.

📋 Checklist: Unit File per unit

• [ ] Title (Certificate of Title)
• [ ] Bill of Sale or Lease Agreement
• [ ] Registration (current, scan)
• [ ] IRP Cab Card
• [ ] Form 2290 Schedule 1 (current tax year)
• [ ] Annual Inspection Report (latest, with inspector's name and license)
• [ ] Insurance Certificate for this VIN
• [ ] DVIR archive
• [ ] Maintenance / repair log
• [ ] Accident / claim history (if any)
• [ ] In the register spreadsheet: Registration, AI, Form 2290 expiration dates
• [ ] In Google Calendar: reminders at 30, 14, 7 days

✅ You've got Chapter 6 if…

• [ ] You can tell Class 8 from Class 6 and know what weight triggers FMCSA.
• [ ] You remember the 5 main manufacturers and the 5 main trailer types.
• [ ] You've got 80,000 lbs gross / 20,000 single axle / 34,000 tandem locked in.
• [ ] You understand the chain IRP ↔ HVUT/2290 ↔ Annual Inspection ↔ Registration.
• [ ] You can read a registration from any state: VIN, plate, GVW, registrant, expiration.
• [ ] You know what physically stays in the cab.
• [ ] You've set up (or can set up in a day) a register of every unit with expiration dates.
• [ ] You understand the renewal process: 2290 → 4 quarters of miles from IFTA → file with DMV or portal.

💰 When the fleet stops fitting in Excel

At 1–3 trucks, Google Sheet + calendar works. At 4–8, it turns to mush: one truck's AI is in March, another's in Illinois (March 31 — universal IL day), the third's 2290 is due in August, the fourth's IRP hits in a different month. Plus DVIRs from drivers, maintenance logs, fuel spend for IFTA. One forgotten document = $1,500+ fine and a CSA hit.