When operating powered mobile equipment, seat belts or restraining devices must be used by both the operator and any passengers while the equipment is in motion [1]. Seat belts are crucial for safety; failure to use them can lead to serious accidents or death if the machine tips or rolls over 2, 3, 4, 5.

Here are some key points regarding seat belts:

• Usage: Always fasten your seat belt during operation 2, 3, 4, 5.
• Inspection: Regularly check the seat belt mounting bolts for looseness and retighten if necessary 2, 3, 4, 5. Also, inspect the belt and attaching brackets for any abnormalities before use [2].
• Replacement: Replace seat belts every three years, regardless of their appearance, as the manufacturing date is woven into the back of the belt 2, 3, 4, 5.
• Proper Fit: Ensure the seat belt is not twisted when fastening it 2, 3, 4, 5. Adjust the belt to remove excess slack, ensuring it sits low across the lap 2, 4, 5, 10, 11, 12, 13, 15, 16, 17, 18.
• Retractable Belts: For retractable seat belts, avoid using extensions, as they may compromise the retractor system's ability to lock properly during an incident 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20. Caterpillar recommends using only non-retractable seat belts with extensions 9, 10, 11, 12, 13, 14, 15, 16, 17, 18.

In situations where seat belts are impractical, restraining devices like shoulder belts, bars, or gates should be used [3].