Abstract: A freight transport carrier comprises a tractor unit, a slave tray loading unit, and a slave tray actuation mechanism. The tractor unit comprises a chassis, a plurality of wheels coupled to the chassis, and a power source configured to selectively provide rotational motion to the plurality of wheels. The slave tray loading unit is coupled to the chassis of the tractor unit and comprises a plurality of slave trays. At least one of the plurality of slave trays is an actuatable slave tray that is selectively actuatable between a first or lowered position, in which the actuatable slave tray is configured to receive a load, and a second or raised position, in which the actuatable slave tray is configured to transport the load. The slave tray actuation mechanism is configured to selectively actuate the actuatable slave tray between the first or lowered position and the second or raised position.