A transport system in which overhead traveling vehicles and a local carriage are both configured to transfer articles to and from the same transfer destination, the transport system comprising: a track for the overhead traveling vehicles; a track for the local carriage that is located directly below the track for the overhead traveling vehicles; a transfer destination located directly below both the track for the overhead traveling vehicles and the track for the local carriage; overhead traveling vehicles configured to travel on the track for the overhead traveling vehicles and including an elevating platform configured to move vertically while supporting an article; and a local carriage configured to travel on the track for the local carriage and including an elevating platform configured to move vertically while supporting an article; and a buffer (10, 50, 60, 80) provided in a location that is not directly below the track for the local carriage, the buffer (10, 50, 60, 80) being connected to the track for the local carriage and being configured to deliver and receive the articles to and from the local carriage, wherein the buffer (10, 50, 60, 80) includes: a plurality of cells configured to accommodate an article; a transport in/out cell (40, 42, 54) for the overhead traveling vehicles to transport articles to and from the transport in/out cell (40, 42, 54) being provided below the track for the overhead traveling vehicles; and a transport apparatus (4, 34, 38, 64, 66, 68, 70) configured to transport an article between the cells (37, 40, 42, 54), characterized in that the transport in/out cell (40, 42, 54) is the uppermost cell in the buffer (10, 50, 60), the buffer (10, 50, 60, 80) has plural cells for accommodating the article vertically below the transport in/out cell (40, 42, 54), the track for the local carriage extends to one of the cells different from the transport in/out cell (40, 42, 54). a track for the overhead traveling vehicles; a track for the local carriage that is located directly below the track for the overhead traveling vehicles; a transfer destination located directly below both the track for the overhead traveling vehicles and the track for the local carriage; overhead traveling vehicles configured to travel on the track for the overhead traveling vehicles and including an elevating platform configured to move vertically while supporting an article; and a local carriage configured to travel on the track for the local carriage and including an elevating platform configured to move vertically while supporting an article; and a buffer (10, 50, 60, 80) provided in a location that is not directly below the track for the local carriage, the buffer (10, 50, 60, 80) being connected to the track for the local carriage and being configured to deliver and receive the articles to and from the local carriage, wherein the buffer (10, 50, 60, 80) includes: a plurality of cells configured to accommodate an article; a transport in/out cell (40, 42, 54) for the overhead traveling vehicles to transport articles to and from the transport in/out cell (40, 42, 54) being provided below the track for the overhead traveling vehicles; and a transport apparatus (4, 34, 38, 64, 66, 68, 70) configured to transport an article between the cells (37, 40, 42, 54), a plurality of cells configured to accommodate an article; a transport in/out cell (40, 42, 54) for the overhead traveling vehicles to transport articles to and from the transport in/out cell (40, 42, 54) being provided below the track for the overhead traveling vehicles; and a transport apparatus (4, 34, 38, 64, 66, 68, 70) configured to transport an article between the cells (37, 40, 42, 54), characterized in that the transport in/out cell (40, 42, 54) is the uppermost cell in the buffer (10, 50, 60), the buffer (10, 50, 60, 80) has plural cells for accommodating the article vertically below the transport in/out cell (40, 42, 54), the track for the local carriage extends to one of the cells different from the transport in/out cell (40, 42, 54).