What is the recommended body position when riding on a flat car before it moves?

The recommended body position for riding on a flat car before it moves is to kneel or sit. This position stabilizes the body and lowers the center of gravity, which enhances safety while the car is in motion. Kneeling or sitting reduces the risk of falling or being thrown from the car because it allows for better balance and control. This position also helps to keep the body within the safe confines of the car, which is essential for maintaining safety protocols.

Moreover, standing upright could lead to an increased likelihood of losing balance, especially if the car is jolted or encounters uneven surfaces. Hanging over the side poses a serious safety risk, as it dramatically increases the chance of injury from falling off the car or coming into contact with surrounding structures or equipment. Crouching low, while seemingly safe, does not offer the same stability as kneeling or sitting and may also limit visibility and the ability to react quickly in case of an emergency. Thus, kneeling or sitting provides the best combination of safety and stability when preparing to ride on a flat car.