What is one of the primary purposes of using handholds when mounting a tractor?

Using handholds when mounting a tractor primarily enhances safety and enables the operator to maintain three points of contact. This principle is crucial in preventing falls and ensuring stable access to the tractor. When an operator uses handholds effectively, they can secure themselves while simultaneously using their feet to step on the tractor's steps or platform.

Maintaining three points of contact—two hands and one foot or two feet and one hand—reduces the risk of losing balance and provides stability when entering or exiting the tractor. This practice is fundamental in promoting safe tractor operation and aligns with guidelines for safe machinery use, thus lowering the chances of accidents during mounting or dismounting.