Definition
Two axles positioned close together and treated as an axle group for many weight rules.
Practical example
Example: A trailer tandem distributes load across two axles.
Why it matters
Tandem position affects axle weight, turning, offtracking, and bridge compliance.
Tandem Axles 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 Tandem Axles mean in trucking?
Two axles positioned close together and treated as an axle group for many weight rules.
Why should a commercial driver understand Tandem Axles?
Tandem position affects axle weight, turning, offtracking, and bridge compliance.
This glossary is educational. Always follow current federal and state rules, the vehicle manufacturer’s instructions, and your motor carrier’s procedures.