Flatbed vs step-deck vs lowboy

Standard flatbed — the default

• Deck sits around 5 feet off the ground, typically 48 feet long — which leaves roughly 8'6" of legal cargo height.
• The right call for most building materials, block, lumber, steel, and machinery that isn't tall.
• Loads by forklift or crane from the side or above — the flexibility that makes it the workhorse.

Step-deck (drop-deck) — for tall freight

• The deck steps down behind the gooseneck, buying roughly 18 inches of extra cargo height.
• The workhorse for taller machinery and equipment that would run over height on a straight flatbed.
• Many carry ramps — handy for drive-on machines.

Lowboy (RGN) — for the seriously tall and heavy

• Deck drops to roughly 18–24 inches off the ground; the detachable gooseneck lets machines drive on from the front.
• The trailer for excavators, dozers, and anything that needs every inch of height budget.
• Costs more and books tighter — worth it exactly when nothing else is legal.

Hot shot — the right-sized option

• A 1-ton or larger pickup — more often than not a dually — pulling a gooseneck trailer.
• Typically 30–40 feet of deck for smaller machines and partial loads.
• Books fast, runs fast, and doesn't charge you for deck you don't use.

The honest rule of thumb

Freight under about 8'6\" tall rides a flatbed. Between roughly 8'6\" and 10' — step-deck territory. Taller than that, you're talking lowboy, and possibly permits anyway. Don't buy more trailer than the load needs; don't gamble an over-height ticket to save a few hundred dollars. Your broker's job is to land that call correctly — it's question two on every quote.

Common questions