A dolly includes an actuated platform and obstruction sensor as well as a camera and a depth sensor. The eye height of a user is determined according to outputs of the camera and depth sensor. The platform is then moved to an elbow height determined based on the eye height and the depth sensor is moved to a position above the platform. In response to detecting obstruction of the obstruction sensor, the platform is lowered. Upon completion of loading, the platform is lowered to a lowest position. A stand may be retracted upon lowering of the platform to its lowest position.