A transport vehicle includes a pair of top arms that extend and retract, a pair of guides disposed below the pair of top arms, an adjuster that changes a spacing between the pair of guides, a cargo placement surface disposed below the pair of guides, a clamping detector that detects whether or not the cargo is being held between the pair of guides, and a controller. The controller pulls the cargo onto the cargo placement surface, then causes the adjuster to start a positioning operation as an operation to reduce a spacing between the pair of guides, and stops the positioning operation when the clamping detector detects that the cargo is being held between the pair of guides.