Definition
A movable trailer-axle assembly used to adjust weight distribution and trailer wheelbase.
Practical example
Example: The driver slides the tandems rearward to shift weight from the trailer axles toward the tractor.
Why it matters
The pins must be fully engaged, and legal bridge and length limits must still be met.
Sliding Tandems 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 Sliding Tandems mean in trucking?
A movable trailer-axle assembly used to adjust weight distribution and trailer wheelbase.
Why should a commercial driver understand Sliding Tandems?
The pins must be fully engaged, and legal bridge and length limits must still be met.
This glossary is educational. Always follow current federal and state rules, the vehicle manufacturer’s instructions, and your motor carrier’s procedures.