ABSTRACT
All vehicles expose their occupants to some form of vibration. Vibration can be due to the inherent motion of the vehicle, such as manoeuvring, due to in-vehicle sources such as motors, or due to the surface on which the vehicle is travelling. In most cases, the focus of vehicle ergonomics is on the driver, but in many cases, vehicles will contain multiple people, all of whom are exposed to vibration. This vibration is usually transmitted to the occupant through a seat, but could also be transmitted through contact with the hands, through the feet, or via headrests. Some travellers are exposed whilst standing, others whilst lying down. This chapter focuses on those exposed to vibration whilst sitting on vehicle seats.
