What is LTL freight brokerage?

LTL freight brokerage is the business of arranging less-than-truckload shipments — freight too small to fill a whole trailer, which instead shares trailer space with other shippers' freight — between the companies that need goods moved and the LTL carriers that move them. An LTL broker is a freight broker like any other: an FMCSA-licensed intermediary that matches demand with capacity and earns the margin in between. What makes it a specialty is everything LTL adds on top — freight class, accessorials, and a terminal-based transit network that truckload freight never touches.

LTL vs. FTL: the core difference

Full truckload (FTL) is one shipper's freight filling one trailer, moving direct from pickup to delivery on a single lane rate. It is conceptually simple: a lane, a truck, a number.

Less-than-truckload (LTL) is a smaller shipment — typically 1 to 6 pallets, roughly 150 to 15,000 lbs — that rides with other shippers' freight and moves through a hub-and-terminal network: picked up locally, hauled to an origin terminal, line-hauled to a destination terminal, and delivered locally. Because the trailer is shared, the carrier needs a fair way to price each shipment's slice of it — which is why LTL prices on freight class, weight, density, and accessorials rather than a flat lane rate. That shared trailer and terminal network is the source of nearly every way LTL is harder to broker than truckload.

What an LTL broker does

The workflow rhymes with any brokerage — intake, source capacity, book, execute — but each stage carries LTL-specific weight.

• Intake and classification. The shipment arrives with a commodity, weight, and dimensions. The broker confirms the NMFC freight class — because a wrong class means a wrong quote and a reclass fee later.
• Quoting. The broker collects carrier quotes and assembles each into an all-in figure — linehaul, fuel, accessorials, class — so they compare on equal terms. This is the work a good LTL rate quoting process is built to speed up.
• Carrier selection. The broker matches the lane to the right network — regional or national — and vets the carrier's authority and reliability before booking.
• Execution and exceptions. The broker tracks the shipment across terminals, confirms transit against the delivery window, and works the exceptions LTL generates — reclass disputes, missed accessorials, delays — more of which arise than in truckload.

How LTL pricing works

An LTL price is a stack, not a single number. Four layers build it:

• Linehaul — the base transportation charge for moving the shipment between terminals.
• Fuel surcharge — a percentage on top that shifts weekly with diesel.
• Accessorials — per-service charges for anything beyond dock-to-dock: liftgate, residential or limited-access delivery, inside delivery, notification/appointment, detention.
• Freight class — the NMFC rating (50–500) set by density, stowability, handling, and liability, which scales the whole rate.

Because those layers price separately, two carriers can quote the same linehaul and land hundreds of dollars apart once fuel, accessorials, and class settle. That is the central reason LTL quoting is harder than it looks — and why comparing linehaul alone is a trap. For the class layer specifically, the NMFC freight class guide covers the 18 classes, the four factors, and how to calculate density.

The LTL carrier landscape

LTL capacity comes from two broad groups, and knowing which to use on a given lane is part of the broker's edge.

• National LTL carriers run dense terminal networks spanning most of the country — the right tool for long-haul and multi-region lanes where one network can carry the whole move.
• Regional LTL carriers own a specific geography or corridor and frequently beat the nationals on both price and transit time within their footprint. A regional that owns the lane is often the better book than a national quoting blind.

A capable LTL broker doesn't default to one carrier for everything; it matches each lane to the network that fits — regional where the lane sits inside a regional's footprint, national where the shipment crosses regions.

The operational challenges of LTL

LTL generates more exception work per load than truckload, and four challenges account for most of it.

• Reclassification. Carriers reweigh and remeasure at the terminal and can reassign a higher class, changing the price after the quote. Reclass and reweigh adjustments are among the most common LTL invoice disputes.
• Accessorials. Extra-service charges are easy to miss at quoting and surface later as an invoice the shipper didn't expect. Resolving them upstream, at booking, is far cheaper than fighting them downstream.
• Transit SLAs. LTL moves terminal-to-terminal, so transit varies by carrier network and must be confirmed against the required delivery window before booking — not discovered after.
• Email volume. LTL loads draw more carrier replies than truckload, because more carriers can partial-load the freight onto existing routes. The inbox is simply heavier.

How an AI carrier rep helps the LTL broker

Every one of those challenges lands first in the inbox, which is exactly where an AI carrier rep works. Keelway reads each inbound carrier reply the moment it arrives and does the LTL-specific triage a coordinator would otherwise do by hand:

• Extracts and normalizes each quote to comparable all-in terms — linehaul, fuel, accessorials, class.
• Surfaces accessorial gaps and class mismatches as open items before booking, not after an invoice.
• Checks that a carrier's FMCSA authority actually fits LTL operations, and scores trust against fraud signals.
• Handles the volume without a ceiling and ranks the field so the coordinator works the best quotes first.

The honest boundary matters: Keelway surfaces and flags — it does not assign freight class, compute density as an authority, or invent rates. It makes the LTL complexity visible and fast to act on; the judgment stays human. For the full product view, see the Keelway LTL module, and for the fundamentals of brokerage generally, see what is a freight broker.