Conveyor Belt

Conveyor Belts are structures used to transport items (and Lizard Doggos) between structures. Belts consist of a single track down which items and players can be transported. They can curve around 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.

Speed
There are multiple tiers of conveyor belt available, which determines their speed. When items join a belt at a rate higher than the belt's speed, items can be compressed together. For a visual comparison of the different belt speeds, see this YouTube video from Coffee Stain Studios. It is currently assumed that the last few speeds shown are a joke and not actually in the game.

Length
The maximum length a belt can span between Conveyor Poles and/or buildings is 49 meters (6.125 foundation lengths). The cost is approximately 0.5 resources per meter, though it varies between 0.4-1 for shorter lengths.

Spiral conveyor elevator
Engineers can easily make an early-game spiral conveyor belt by placing stairs down and using them as a foundation for the conveyor belt. There must be at least 2 foundation spots open to make a spiral conveyor staircase. The stairs can be removed once the conveyor is set up.

Trivia

 * The conveyor belt was first shown in the E3 trailer