Handling and Documenting Cargo: A CDL Guide
By Jack Mahana | Published 2026-08-21
Reviewed by Jack Mahana, CDL Instructor (13+ years)
Last verified: August 2026 · FMCSA-compliant content
Key Takeaways
- The bill of lading (BOL) is the most important cargo document — receipt, contract, and title in one
- Federal weight limit: 80,000 lbs GVW on Interstates (5-axle combination)
- Cargo securement: one tie-down per 10 feet of cargo, minimum two
- Aggregate working load limit of tie-downs must be ≥ half the cargo weight
- Never accept a load without inspecting it and verifying the BOL matches
- Keep all paperwork with you: BOL, permits, weight tickets, dispatch instructions
Cargo handling and documentation is where the business side of trucking meets the regulatory side. Get it wrong and you can face fines, cargo claims, or even criminal charges. Get it right and you protect yourself, your carrier, and your customers. This guide covers the documents you must carry, the weight limits you must obey, and the securement rules that keep cargo from shifting on the road.
The Bill of Lading (BOL): Your Most Important Document
The bill of lading is a legal document that serves three functions: (1) a receipt for the freight received, (2) a contract of carriage between the shipper and carrier, and (3) a document of title that can transfer ownership of the goods. Every shipment you haul requires one.
A proper BOL includes:
- Shipper name and address
- Consignee (receiver) name and address
- Cargo description (type, quantity, packaging)
- Weight and dimensions
- Freight class (for LTL shipments)
- Special handling instructions (fragile, temperature-controlled, hazmat)
- Pickup date and delivery date
- Shipper and carrier signatures
Always inspect the cargo before signing the BOL. If the cargo count or condition doesn't match the BOL, note the discrepancy on the document before signing. Once you sign, you've legally accepted responsibility for the freight in the condition described. If you deliver damaged goods and the BOL says they were in good condition at pickup, you're liable.
Weight Limits and the Bridge Formula
Federal weight limits are set by 49 CFR 658.17 and apply to all Interstate highways:
- Gross vehicle weight: 80,000 lbs maximum (5-axle combination)
- Single axle: 20,000 lbs maximum
- Tandem axle: 34,000 lbs maximum
- Steering axle: Typically 12,000–20,000 lbs (varies by state)
The Federal Bridge Formula determines the maximum weight allowed on any group of axles based on axle spacing. The formula ensures that weight is distributed to prevent bridge damage. If your axle weights are legal individually but the bridge formula calculation exceeds the limit, you're overweight. Always get weighed before leaving the shipper — don't rely on the shipper's estimate.
Cargo Securement Rules (49 CFR 393.110)
Federal regulations require that all cargo be secured against shifting, falling, or rolling. The rules:
- Minimum tie-downs: One per 10 feet of cargo length, with a minimum of two regardless of length
- Working load limit: The aggregate working load limit of all tie-downs must be at least half the weight of the cargo
- Tie-down condition: No cuts, tears, or fraying. Chains must not have stretched links. Binders must function properly
- Edge protection: Use edge protectors where tie-downs contact sharp edges to prevent cutting
- Inspection: Check cargo securement within the first 50 miles of driving, then every 150 miles or 3 hours thereafter
For specialized cargo, additional rules apply. Tanker loads must have anti-surge baffles or be filled to at least 6% or no more than 94% capacity. Hazmat loads require placards, shipping papers, and specific securement methods.
Other Paperwork You Must Carry
- Dispatch instructions: Pickup and delivery locations, times, contact numbers
- Weight tickets: Scale tickets proving legal weight — keep the original
- Permits: Oversize/overweight, hazmat, state-specific permits as needed
- Hazmat shipping papers: Required for any placarded load — must be within reach of the driver and accessible without leaving the seat
- ELD records: Electronic logs showing hours of service compliance
- CDL and medical card: Always on your person while driving
- Insurance card: Proof of liability and cargo insurance
- Accident report forms: Required in some states
Protecting Yourself from Cargo Claims
- Photograph the cargo at pickup and delivery — especially if there's any visible damage
- Note discrepancies on the BOL before signing — if the count is wrong or cargo is damaged, write it on the BOL
- Check seals — if a seal number doesn't match the BOL, note it before accepting the load
- Never break a seal without the consignee present — it invalidates the chain of custody
- Keep your copies — retain signed BOLs, scale tickets, and delivery receipts for at least one year
Frequently Asked Questions
What is a bill of lading and why is it important?
A bill of lading (BOL) is a legal document that serves as a receipt for freight, a contract of carriage, and a document of title. It lists the shipper, consignee, cargo description, weight, and handling instructions. The driver must carry the BOL, have it signed at pickup and delivery, and retain a copy.
What are the federal weight limits for commercial vehicles?
Federal limits are 80,000 lbs gross vehicle weight for a 5-axle combination on Interstates. Single axle: 20,000 lbs. Tandem axle: 34,000 lbs. The Bridge Formula determines legal weight distribution based on axle spacing. Oversize/overweight permits are required for loads exceeding these limits.
How many tie-downs are required to secure cargo?
One tie-down for every 10 feet of cargo length, with a minimum of two. The aggregate working load limit of all tie-downs must be at least half the weight of the cargo. Check securement within the first 50 miles, then every 150 miles or 3 hours.
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