Variations in the innovation utilized to adjust the neck, deck height, and the load capability of the axles have altered the size of a lowboy trailer. The lowboy or lowbed trailer comes in 4 fundamental versions: fixed gooseneck; mechanical gooseneck (MG); hydraulic removable gooseneck (HDG); and the mechanically removable gooseneck (MDG).

The size of a lowboy trailer with a mechanical gooseneck comes in second in terms of deck length and weight. The trailer company has three-axle trailers with lengths extending from 52 feet and two inches to 52 feet and 10 inches. Transportation and shipping business shopping for trailers these days would hardly ever put a value on the size of a lowboy trailer.
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