It's always the responsibility of the driver to ensure the trailer is loaded properly, even if the trailer is loaded by someone other than the driver.
For more information about cargo securement, visit the Federal Motor Carrier Safety Administration (FMCSA) website.
Disclaimer: The information contained on this page is provided by Big Trailer Rentals, LLC as a general guide to assist with loading a trailer and is not endorsed by DOT or FMCSA. Each trailer and loading situation is different and some information may be omitted from this guide. It is recommended that you check your own resources and federal and local laws pertaining to safety regulations while loading and hauling with a trailer. Big Trailer Rentals, LLC is in no way liable for use or implementation of information provided in this guide.