Modular interchangeable cargo deck

A removable, modular, cargo deck trailer system comprising:

• a JRaD or flatbed trailer having a flat bed portion;
• first, second, and third different deck units attached to the trailer,
• wherein:
• each deck unit comprises one or more interface members for securing the deck units to the flat bed portion of the JRaD or flatbed trailer, wherein said interface members are identically located relative to the respective first, second, and third different deck units allowing the first, second, and third different deck units to be removably and interchangeably attached to an identical location of the JRaD or flatbed trailer,
• each of the first, second, and third deck units comprise at least one retractable and extendable stop member for retaining cargo;
• the flat bed portion of the JRaD or flatbed trailer comprises members configured for attachment to said interface members to secure the deck units to the JRaD or flatbed trailer;
• the first deck unit comprises a first moving apparatus comprising rollers aligned perpendicular to the lengthwise direction relative to the deck units for moving cargo in said lengthwise direction relative to the deck units,
• the second deck unit comprises a second moving apparatus comprising a plurality of hydraulic lift bars for moving the cargo in a vertical direction relative to the deck units, and
• the third deck unit comprises a third moving apparatus comprising a turntable located between side-shift rollers oriented parallel to said lengthwise direction and between pallet-turn rollers oriented perpendicularly to said lengthwise direction for moving cargo in at least one of a widthwise direction relative to the deck units or in a rotating direction relative to the deck units.