Cargo & Freight · Driver Training VideoStep Deck, Lowboy & RGN Operations

Start with the basics

A standard flatbed deck sits around five feet off the ground. A step deck, also called a drop deck, drops the main deck lower so you can carry taller loads. A lowboy, or removable gooseneck — RGN — sits lowest of all.

Here's why deck height matters: it sets your legal cargo height. Most states target a total height of thirteen feet six inches. Whatever your deck height is, that's how much load height you actually have left to work with.

Loading a removable gooseneck has its own procedure. Detach the gooseneck, drive the equipment on from the front, and before any of that — check that the ground under the gooseneck can bear the weight. Soft ground is not your friend here.

Ramps on a step deck or a beavertail have a break-over angle. Long, low equipment can high-center on a steep ramp — the frame catches before the wheels are even loaded. Use the right ramps for the equipment, and take the right approach angle. Don't guess your way up a ramp.

Soft ground and grade are the enemy on every load like this. The trailer can shift, or the gooseneck can sink right into the dirt. Load on firm, level ground, and use a spotter — every time, no exceptions.

Match the trailer to the load. Don't put a tall load on a flatbed when a step deck would keep you legal. And never — never — exceed the deck rating or the axle ratings just to make a load fit.

A lower deck is not permission to stop measuring. Measure your loaded height for real, every time, and route for the bridges on your route. The bridge always wins that argument.

The securement physics don't change between trailer types, but the anchor points do. Use the rated tie-down points built into that specific trailer, not whatever looks convenient.