How do inspectors verify the condition of safety belts?

Inspectors verify the condition of safety belts primarily by checking for proper function. This involves ensuring that safety belts can be extended and retracted smoothly and that the latch properly secures the belt when fastened. It is crucial for inspectors to confirm that the safety belts do not show signs of wear, such as fraying or damage, as this could compromise their effectiveness in protecting occupants during a crash. Ensuring proper function is essential for safety, as functional safety belts are a key component of vehicle occupant protection systems.

The other options pertain to aspects that do not directly relate to the condition or effectiveness of safety belts. Testing the color is not relevant to the function or safety of the belts. Cleaning them might be part of general maintenance but does not assess their functional integrity or safety. Comparing models does not provide any insight into the specific condition or functionality of the safety belts being inspected.