Abstract: A problem that is often encountered under uneven terrain conditions with on-board load weighing systems for vehicles, such as logging trucks, having a frame member and a load support member to which a load which is to be measured is applied, is that structural failures occur in the load cell assemblies included in the on-board load weighing system. The cause of these structural failures is traced to rotation of the load cell assemblies resulting in undue tensive forces in the load cells thereof. Various restraining devices are discussed for limiting the upward deflection of an upper, load concentrating portion of the load cell to maintain the tensive forces within acceptable levels.