Definition
A wedge placed against a wheel to help prevent unintended vehicle movement.
Practical example
Example: Wheel chocks are positioned before loading at a dock when facility rules require them.
Why it matters
Chocks add protection but do not replace proper parking-brake and vehicle-securing procedures.
Chock in CDL training
CDL students should be able to recognize this term, explain it in plain language, and connect it to safe vehicle operation, inspection, licensing, or freight work as applicable. Review the term in context and practice using it during classroom study and hands-on training.
Frequently asked questions
What does Chock mean in trucking?
A wedge placed against a wheel to help prevent unintended vehicle movement.
Why should a commercial driver understand Chock?
Chocks add protection but do not replace proper parking-brake and vehicle-securing procedures.
This glossary is educational. Always follow current federal and state rules, the vehicle manufacturer’s instructions, and your motor carrier’s procedures.