What is the purpose of trailer safety chains?

The primary purpose of trailer safety chains is to secure the trailer to the towing vehicle in the event that the hitch fails or becomes disconnected. These chains serve as a secondary connection point that prevents the trailer from completely detaching from the tow vehicle, reducing the risk of accidents and potential injuries on the road. By being a critical safety feature, they help ensure that the trailer remains attached even if the primary hitch is compromised.

The other choices do not accurately reflect the functional role of safety chains. Enhancing styling, increasing cargo space, or reducing noise are not relevant to the safety functions of these chains, which directly relate to the secure attachment of the trailer during transport.