What shall be posted on cars or platforms?

The correct choice highlights the crucial information that must be posted on cars or platforms. Specifically, rated load capacities are essential for ensuring that operators do not exceed the safe weight limit, which is vital for preventing accidents and maintaining safety standards. Recommended operating speeds help to guide operators in the safe and efficient use of the equipment, ensuring that they operate within the manufacturer's designated parameters.

Furthermore, including special hazard warnings or instructions is important to inform operators of any specific risks associated with the use of the hoisting equipment. This could include details about unique operational conditions or precautions that must be taken to ensure the safety of everyone involved. Overall, the inclusion of this information is a critical aspect of proper hoisting operation, as it helps ensure a safe working environment by providing operators with the necessary knowledge to operate the equipment safely and effectively.