As a simple solution to alleviate problems associated with manual material handling, manual vehicles, such as carts,
trucks, wheelbarrows, etc., are often provided to operators. This review was initiated by concern for the effects of
design, task, environment, and operator factors on the usability of manual vehicles. The previous studies are
summarized and then ergonomic recommendations are made for each factor. Most studies have been performed on
four-wheeled carts and focused on wheel design, handle height, load weight, moving direction, motion phase, and floor
type. Biomechanics, psychophysics, and work physiology have been used to help understand usability. For future
research, the systematic classification of manual vehicles is necessary to make specific ergonomic recommendations for
special-purpose manual vehicles.