Load Lock / Load Bar
A load lock (or load bar, logistics bar, or cargo bar) is an extendable metal bar that wedges between the walls of a trailer to prevent freight from shifting forward, backward, or sideways during transport. They are essential cargo securement tools.
In Depth
Load bars use spring or ratchet tension to wedge firmly between trailer walls, creating a physical barrier that holds freight in place. Standard load bars extend from 88 to 116 inches and are rated for specific load forces.
FMCSA cargo securement regulations (49 CFR Part 393) require all cargo to be properly secured to prevent shifting that could affect vehicle stability or damage the freight. Load bars are one of the primary tools for meeting this requirement in dry van operations.
Most experienced dry van drivers carry 4–8 load bars. They're inexpensive ($25–$60 each) and essential for keeping loads from shifting on braking or turns. Proper use can also prevent cargo claims from freight shifting during transport.
Usage Example
Example: 'I loaded the back 20 feet of the trailer then placed 4 load bars across to prevent the freight from sliding during hard braking.'
Related Terms
Straps and Chains
Cargo straps (tie-down straps) and chains are securement devices used on flatbed, step-deck, and open-deck trailers to anchor freight directly to the trailer. FMCSA cargo securement standards specify the number, rating, and placement required based on freight weight and type.
Shrink Wrap
Shrink wrap (stretch wrap) is a thick plastic film wound around palletized freight to stabilize and secure it during transport. Properly applied shrink wrap prevents freight from shifting, protects against moisture and dust, and is a basic requirement for most LTL shipments.
Palletization
Palletization is the process of stacking and securing freight onto pallets for efficient handling, transport, and storage. Properly palletized freight protects cargo integrity, facilitates forklift handling, and can affect freight class determination in LTL shipping.
TARP / Tarping Fee
Tarping refers to covering flatbed or open-deck freight with heavy canvas tarps to protect it from weather and road debris. A tarping fee is an accessorial charge of $50–$300 that compensates drivers for the labor of applying, securing, and removing tarps.
Frequently Asked Questions
How many load bars do I need?
Typically 2–4 per load section, placed at top and mid-height. Have 6–8 on hand to handle various load configurations.