FTL refers to full truckload freight. FTL shipping is commonly used for large shipments that require taking up the entire truck, or at least close to it. With FTL, your freight is the only freight moving on an individual truck so you have exclusivity to the entire truck and theoretically are filling the truckload. You can reserve the truck with its full capacity even if you don’t require filling up the entire available space. Doing so would ensure that you won’t have to worry about your goods changing hands at any time or your goods being stuck with other products.