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87+ Terms

Trucking Glossary

Plain-English definitions for every trucking term an owner-operator needs to know — from deadhead and TONU to IFTA, freight class, and HOS.

87 terms

A

B

BackhaulOperations

A backhaul is a return load that a driver picks up after making a delivery, allowing them to earn revenue on what would otherwise be an empty repositioning run. Backhaul rates are typically lower than primary lane rates.

Break-Even RateFinancial

The break-even rate is the minimum rate per mile a carrier must charge to cover all operating costs without making a profit or loss. Any rate above break-even generates net income.

Bill of Lading (BOL)Shipping

A Bill of Lading (BOL or B/L) is a legal document issued by a carrier to a shipper that serves as a receipt for cargo, a contract of carriage, and a document of title. The BOL must accompany every shipment.

BrokerBusiness

A freight broker is a licensed intermediary that connects shippers who need to move freight with carriers who have available capacity. Brokers earn a commission (the spread between what shippers pay and what carriers receive).

BobtailOperations

A bobtail refers to a semi-truck tractor driving without a trailer attached. Drivers bobtail when repositioning to a pickup location, returning to their home terminal, or moving between facilities without a load.

Broker Fee / CommissionFinancial

A broker fee (or broker commission) is the margin a freight broker keeps between what a shipper pays to move freight and what the carrier receives for hauling it. The typical broker margin is 15–25% of the shipper's total rate.

Bobtail InsuranceBusiness

Bobtail insurance (also called non-trucking liability) covers a semi-truck when it is being driven without a trailer and outside of active dispatch — such as driving home after a delivery or repositioning to a pickup. It fills the gap that primary insurance does not cover.

Bridge FormulaEquipment

The Federal Bridge Formula (also called Bridge Formula B) is a federal regulation that limits the weight a commercial vehicle can carry based on the number of axles and the distance between them, to prevent damage to bridges and road infrastructure.

C

Cost Per MileFinancial

Cost per mile (CPM) is the total operating cost divided by total miles driven in a given period. It includes both fixed costs (insurance, truck payment) and variable costs (fuel, maintenance) per mile.

CDL (Commercial Driver's License)Compliance

A Commercial Driver's License (CDL) is a specialized license required to operate large commercial vehicles including semi-trucks, buses, and tankers. CDL classes are A, B, and C depending on vehicle type and weight.

CarrierBusiness

In trucking, a carrier is the licensed motor carrier (company or owner-operator) that physically transports freight using its own equipment under its own DOT/MC authority.

Contract RateOperations

A contract rate is a pre-negotiated, fixed rate per mile agreed upon between a shipper and carrier for freight movement over a defined period, typically 6–12 months. Contract rates provide revenue predictability for carriers and capacity reliability for shippers.

Carrier PacketCompliance

A carrier packet is a set of documents that brokers and shippers require from carriers before they can book a load together. It typically includes the carrier's MC/DOT numbers, W-9, certificate of insurance, and signed broker-carrier agreement.

CSA ScoreCompliance

A CSA (Compliance, Safety, Accountability) score is an FMCSA safety measurement system that grades carriers and drivers across seven categories called BASICs based on roadside inspection data, violation history, and crash reports. Higher scores indicate more safety risk.

Cargo InsuranceBusiness

Cargo insurance (also called motor truck cargo insurance) covers the freight a carrier is transporting in the event of theft, damage, or loss during transit. FMCSA requires a minimum of $5,000–$10,000 cargo coverage, though brokers commonly require $100,000.

Cube OutShipping

Cube out occurs when a trailer reaches its dimensional capacity — the available space is filled — before reaching its maximum weight limit. This is common with light, bulky freight like furniture, snack foods, or bedding.

D

DeadheadOperations

Deadhead miles are miles driven without cargo — empty miles between a delivery drop-off and the next pickup. Deadhead reduces a driver's effective rate per mile and directly cuts into profit.

DetentionOperations

Detention pay is compensation for time spent waiting at a shipper or receiver beyond the agreed free time, typically 2 hours. Standard detention rates range from $50–$100/hour.

Drop and HookOperations

Drop and hook (D&H) is a freight arrangement where a driver drops an empty or loaded trailer at a facility and picks up a pre-loaded trailer, eliminating wait time at the dock.

DOT NumberCompliance

A USDOT number is a unique identifier issued by the FMCSA to commercial motor vehicles operating in interstate commerce. It is used to track a carrier's safety information, inspections, crashes, and audits.

DrayageShipping

Drayage is the short-distance transport of freight, typically from a port, rail terminal, or intermodal facility to a nearby warehouse or distribution center. Drayage carriers specialize in short hauls within 50–150 miles of major freight hubs.

Dispatch ServiceBusiness

A truck dispatch service finds loads for owner-operators in exchange for a percentage of gross revenue, typically 5–10% per load. Dispatchers handle broker negotiations, documentation, and load planning so drivers can focus on driving.

Drop TrailerOperations

A drop trailer program is an arrangement where a carrier leaves a trailer at a shipper's facility to be loaded at the shipper's convenience, then returns to pick it up loaded. It is similar to drop and hook but from the carrier's perspective of managing trailer assets.

Detention PayFinancial

Detention pay is compensation for time spent waiting at a shipper or receiver beyond the agreed free time, typically 2 hours after appointment time. Standard rates range from $50–$100/hour and must be negotiated into the rate confirmation.

Dispatch FeeFinancial

A dispatch fee is the amount charged by a truck dispatch service for finding and booking loads on behalf of an owner-operator. Dispatch fees are typically calculated as 5–10% of gross load revenue per load dispatched.

DVIR (Driver Vehicle Inspection Report)Compliance

A DVIR (Driver Vehicle Inspection Report) is a mandatory federal form that commercial drivers must complete after each driving day to document the condition of their vehicle, noting any defects found during pre-trip or post-trip inspections.

DOT PhysicalCompliance

A DOT physical (Department of Transportation medical examination) is a mandatory health evaluation required for all commercial motor vehicle drivers. It must be performed by an FMCSA-certified medical examiner and renewed every 24 months (or annually for drivers with certain conditions).

Doubles/Triples EndorsementCompliance

A doubles/triples endorsement (T endorsement) on a CDL authorizes a driver to pull two or three trailers simultaneously. It is required to operate any combination vehicle with more than one trailer, including twin 28-foot pup trailers common in regional LTL operations.

Dock PlateShipping

A dock plate (or dock leveler) is a bridge that spans the gap between a truck trailer deck and a loading dock platform, allowing forklifts and pallet jacks to move freight smoothly between the two surfaces.

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L

LumperOperations

A lumper is a third-party labor worker hired to unload freight at a distribution center or warehouse. Lumper fees are typically $50–$200 and are often paid by the carrier and then billed back to the shipper or broker.

LTL (Less Than Truckload)Shipping

LTL (Less Than Truckload) is a freight shipping method where multiple shippers share space on the same truck, each paying for only the portion of the trailer they use. LTL is used for shipments too large for parcel carriers but too small to fill a full trailer.

Load BoardBusiness

A load board is an online marketplace where freight brokers and shippers post available loads, and carriers search for freight that matches their equipment and preferred lanes. Major load boards include DAT and Truckstop.com.

Live Load/UnloadOperations

A live load or live unload is a freight appointment where the driver must wait on-site while the freight is loaded or unloaded, as opposed to a drop and hook arrangement. Wait times of 1–4 hours are common at busy distribution centers.

Layover PayOperations

Layover pay is compensation a carrier receives when a driver is forced to sit idle at a location overnight or for an extended period due to shipper or receiver delays, weekend holds, or scheduling gaps between loads. Rates typically range from $100–$300 per day.

LinehaulOperations

Linehaul refers to the base transportation charge for moving freight from origin to destination, excluding accessorial charges. It is the core revenue component of any trucking invoice, calculated as rate per mile times total loaded miles.

Lease-Purchase AgreementFinancial

A lease-purchase agreement is a contract where a driver leases a truck from a carrier with the option to purchase it at the end of the lease term. Weekly payments are made from the driver's earnings, and the balance can be applied toward ownership.

Liability InsuranceBusiness

Liability insurance in trucking covers bodily injury and property damage caused by the carrier's vehicle to third parties. FMCSA requires a minimum of $750,000 in liability coverage for general freight carriers in interstate commerce.

LiftgateShipping

A liftgate is a powered platform mounted on the rear of a trailer that can be raised and lowered to transfer freight between ground level and trailer deck height. Liftgate service is required for deliveries where no loading dock is available.

Load Lock / Load BarShipping

A load lock (or load bar, logistics bar, or cargo bar) is an extendable metal bar that wedges between the walls of a trailer to prevent freight from shifting forward, backward, or sideways during transport. They are essential cargo securement tools.

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P

Power OnlyOperations

Power only hauling means a driver provides only the tractor (the power unit) to move a trailer that is owned by a shipper, carrier, or leasing company. The driver does not own or manage the trailer.

Pay Per MileFinancial

Pay per mile is a compensation model used by trucking companies where drivers are paid a set rate for every mile driven, typically ranging from $0.55–$0.75/mile for company drivers. Owner-operators earn gross revenue per mile and cover their own expenses.

Percentage PayFinancial

Percentage pay is a driver compensation model where the driver earns a percentage of the gross revenue from each load, typically 25–30% for company drivers or 88–95% for leased owner-operators. It ties driver income directly to the load rate.

Pre-Trip InspectionCompliance

A pre-trip inspection is a mandatory walk-around inspection a commercial driver must complete before operating a vehicle. FMCSA requires drivers to inspect key components including brakes, lights, tires, steering, and mirrors and to certify the vehicle is in safe operating condition.

Post-Trip InspectionCompliance

A post-trip inspection is a mandatory inspection completed at the end of each driving shift where the driver checks the vehicle for any defects or damage that occurred during the trip and documents findings on a Driver Vehicle Inspection Report (DVIR).

Primary InsuranceBusiness

Primary liability insurance is the foundational commercial auto liability policy required by FMCSA for carriers operating in interstate commerce. It covers bodily injury and property damage when the truck is under dispatch and actively engaged in commerce.

Physical Damage InsuranceBusiness

Physical damage insurance covers the repair or replacement of a carrier's own truck and trailer in the event of a collision, rollover, fire, theft, or vandalism. It is not required by FMCSA but is typically required by lenders financing the truck.

Pilot CarEquipment

A pilot car (also called an escort vehicle) is a vehicle that travels ahead of or behind an oversize load to warn other motorists, verify clearances, and comply with state permit requirements. Most states require pilot cars for loads exceeding 14 feet wide or specific length thresholds.

Pallet JackShipping

A pallet jack (also called a pallet truck) is a manual or powered tool used to move palletized freight on smooth surfaces. Manual pallet jacks are standard tools many drivers carry; electric powered pallet jacks are typically found in warehouse operations.

PalletizationShipping

Palletization is the process of stacking and securing freight onto pallets for efficient handling, transport, and storage. Properly palletized freight protects cargo integrity, facilitates forklift handling, and can affect freight class determination in LTL shipping.

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