Payload capacity refers to the maximum weight that a vehicle, such as a truck or aircraft, can safely carry in addition to its own weight. This includes cargo, passengers, and any additional equipment. Understanding payload capacity is crucial for ensuring safety and efficiency in transportation. Different vehicles have varying payload capacities based on their design and purpose. For example, a pickup truck may have a higher payload capacity than a standard sedan, allowing it to transport heavier loads. Exceeding the payload capacity can lead to mechanical issues and safety hazards.