The Gravity conveyor is a form of transport used by the Covenant. It consists of a horizontal anti-gravity field, often over a large gap, acting as a bridge. Whoever enters the anti-gravity field will immediately float up a few feet and be carried to the other side of the bridge at a high speed while suspended in a stasis field that prevents them from falling off. The Gravity conveyors are not always linear; curved ones appear as well.
Gravity conveyors are only encountered in Halo 2. They are seen in gameplay in the levels Gravemind and High Charity. They are seen acting as bridges between the Valleys of Tears and in a large chamber above the Mausoleum of the Arbiter.