For the trailer itself, mud flaps protect the undercarriage from corrosive elements like salt and ice-melting chemicals.
The primary purpose of mud flaps is to minimize the "kick-up" of water, mud, rocks, and other hazardous debris from rotating tires. Trailer Mudflaps
They prevent flying stones from hitting the windshields of following motorists, which reduces the risk of sudden accidents. For the trailer itself, mud flaps protect the