Freight trucking is the movement of goods by truck, from raw materials to finished products, across any distance. It’s the backbone of commerce in the United States, where the industry generated $906 billion in revenue in 2024. Nearly everything you buy, from groceries to furniture to building materials, spent time on a truck at some point in its journey to you.
At its core, freight trucking is one piece of a larger logistics chain that includes collecting, transporting, storing, and delivering goods from where they’re produced to where they’re consumed. But it’s the most visible and widely used piece. Trucks handle the routes that trains and ships can’t reach, connecting factories to warehouses, distribution centers to retail stores, and ports to just about everywhere else.
How Freight Loads Are Categorized
Not every shipment fills an entire truck, and how much space your cargo takes up determines the type of service you need and what you’ll pay.
Full truckload (FTL) means a shipment large enough to fill a standard 53-foot trailer. The shipper pays for the entire truck, and the cargo goes directly from pickup to delivery with no stops in between. This is the most cost-effective option per unit when you have enough goods to justify it.
Less-than-truckload (LTL) is for smaller shipments, generally one to six pallets or under 12 linear feet of trailer space. In LTL shipping, multiple customers share space on the same truck. You pay only for the portion of the trailer your freight occupies, which makes it affordable for smaller loads. The tradeoff is that delivery takes longer because the truck makes multiple stops along its route.
A middle ground called volume LTL exists for shipments that exceed standard LTL size but don’t fill a full trailer. Not every carrier offers this option, but it bridges the gap between the two main categories.
Types of Trailers and What They Carry
The type of cargo dictates the trailer. Four types cover the vast majority of freight on the road:
- Dry vans are the enclosed box trailers you see most often on highways. They carry non-perishable goods: boxed freight, consumer products, electronics, clothing.
- Flatbed trailers have no walls or roof, making them ideal for heavy or oversized cargo like steel beams, building materials, and heavy machinery that needs to be loaded from the side or top.
- Refrigerated trailers (reefers) maintain temperature-controlled environments for perishable goods. Food, pharmaceuticals, and certain chemicals all move in reefers.
- Step deck trailers have a lowered deck behind the cab, giving extra vertical clearance for loads that exceed the height limits of a standard flatbed.
Who’s Involved in a Freight Shipment
Three main players make a freight shipment happen. The shipper is whoever needs goods moved, typically a manufacturer, retailer, or distributor. The carrier is the trucking company that owns the trucks and employs the drivers who physically transport the cargo. The consignee is whoever receives the goods at the destination.
A fourth player often sits between shippers and carriers: the freight broker. Brokers don’t own trucks or employ drivers. They arrange transportation by matching shippers who need cargo moved with carriers who have available capacity. Think of them as middlemen who handle the logistics of finding the right truck at the right price. Brokers that arrange interstate moves are required to be registered with the Federal Motor Carrier Safety Administration (FMCSA) and can only use carriers that are also registered.
Larger companies sometimes hire logistics service providers to manage their entire shipping operation, handling everything from choosing carriers to managing warehouse storage and coordinating routes.
The Life of a Freight Shipment
A freight shipment follows a predictable path. The shipper tenders a load, meaning they post the details of what needs to move, where it’s going, and when. A carrier (or broker acting on behalf of a carrier) accepts the job. When the driver arrives for pickup, both the carrier’s representative and the shipper sign a bill of lading, which is essentially a receipt proving the carrier has taken control of the goods. This document travels with the freight and lists what’s being shipped, where it’s headed, and who should receive it.
The cargo moves to its destination, where the consignee inspects the shipment and signs the bill of lading to confirm delivery. That signed document then triggers the payment process between shipper and carrier.
How Trucks Connect to Ships and Trains
Many shipments don’t travel exclusively by truck. Intermodal transportation uses two or more modes, like ocean vessel, rail, and truck, in a single journey. The cargo stays in the same container throughout, which minimizes handling and reduces the chance of damage.
The trucking portion of an intermodal shipment is called drayage: short-distance hauls, usually within the same metropolitan area, that connect ports, rail yards, and warehouses. A container might arrive at a seaport, get trucked 15 to 50 miles to a rail terminal, travel by train across the country, and then get drayed again from the destination rail yard to a local warehouse. These first-mile and last-mile truck trips are essential because rail lines and shipping ports rarely sit next to the final delivery point.
Driving Rules and Safety Regulations
Federal law strictly limits how long a truck driver can be behind the wheel. For drivers hauling freight, the rules work like this: after 10 consecutive hours off duty, a driver can drive for up to 11 hours, but all driving must happen within a 14-hour window from the moment they start their shift. After 8 hours of driving, they’re required to take at least a 30-minute break.
On a weekly basis, drivers are capped at 60 hours of on-duty time over 7 days, or 70 hours over 8 days if their employer operates every day of the week. These limits exist to prevent fatigue-related accidents, and carriers track compliance through electronic logging devices installed in every truck. The devices automatically record driving time, making it nearly impossible to fudge the numbers.
Technology Behind the Scenes
Modern freight trucking runs on software called a transportation management system, or TMS. These platforms automate much of what used to happen over phone calls and spreadsheets. A TMS compares carrier rates automatically, optimizes how pallets are loaded to maximize trailer space, plans the most efficient delivery routes, and tracks freight in real time across local and global shipments.
For shippers, a TMS identifies the most cost-effective shipping options, including combinations of truck, rail, air, and ocean that a manual process might miss. It also handles freight billing, trade compliance paperwork, and demand forecasting. For the end customer, these systems make it possible to track a package’s progress and get accurate delivery estimates.
The Workforce Challenge
The trucking industry faces a persistent driver shortage. In 2025, industry estimates put the gap between 60,000 and 80,000 drivers. The shortfall is driven by an aging workforce, difficult working conditions that include long stretches away from home, and competition from other industries for workers. When fewer drivers are available, shipping costs rise and delivery timelines stretch, creating ripple effects across supply chains that ultimately show up in consumer prices.