Glossary
Friction
Friction is resistance between cargo and a surface that can help reduce sliding.
Plain-English Meaning
Friction can help reduce sliding, but it changes with surface condition, moisture, oil, dust, packaging, deck material, and vibration.
Indirect tiedowns often depend partly on friction because they add downward force. That does not mean friction can be guessed or used to skip required securement.
Friction is less helpful for roll, tip, or lift movement. Use it as one condition to review, not as a stand-alone plan.
In day-to-day freight work, the safest use of the term is narrow and factual. Confirm the current rule, equipment rating, shipment condition, and company procedure before using any glossary definition for a live securement decision.
Watchouts
- Wet, dirty, or oily decks change the picture.
- Friction does not control roll or tip by itself.
- Do not assume a clean dry deck later remains clean and dry.
Related Terms
Primary Sources / References
Last reviewed:
- FMCSA Cargo Securement Rules Federal Motor Carrier Safety Administration · official · reliability: high
- 49 CFR Part 393 Subpart I - Protection Against Shifting and Falling Cargo Electronic Code of Federal Regulations · regulation · reliability: high