Conveyor Belt

Conveyor Belts are structures shown in the E3 trailer, used to transport items (and Lizard Doggos) between structures. Belts consist of a single track down which items are transported. They can curve round bends and can be slanted up and down to allow for vertical item transport. Many structures have in and out ports onto which belts can be attached.

Belt Speed
Belts can operate at various speeds. . When items join a belt at a rate higher than the belt's speed, items can be compressed together. Belts can go *very* fast.

Speculation
There is no difference in appearance between belts of different speeds, so it is assumed there is only one type of belt with various speed options (possible achieved via overclocking).