To provide a vehicle with casters such as trolly capable of advancing straight, although the casters can freely and eccentrically rotate.

Freely rotatable casters 8, 15 comprise brackets 3, 13 with wheels 1 rotatably mounted thereon, and main bodies 6, 14 that secure the brackets 3, 13 such that the brackets can rotate eccentrically by a predetermined degree d perpendicularly with respect to an axis 2 of the wheels 1. The main bodies 6, 14 are mounted on a vehicle body 12 such that each axis center of the brackets 3, 13 forms a tilt angle with respect to a vertical line of the vehicle body 12. As a result, the trolly can run toward a specific direction in a stable manner.