Definition
A mechanism that allows the tractor's fifth wheel to move forward or rearward to adjust axle loading.
Practical example
Example: The driver slides the fifth wheel forward to transfer weight toward the steer axle.
Why it matters
Weight adjustments must stay within equipment and legal limits and require reinspection.
Fifth-Wheel Slide 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 Fifth-Wheel Slide mean in trucking?
A mechanism that allows the tractor's fifth wheel to move forward or rearward to adjust axle loading.
Why should a commercial driver understand Fifth-Wheel Slide?
Weight adjustments must stay within equipment and legal limits and require reinspection.
This glossary is educational. Always follow current federal and state rules, the vehicle manufacturer’s instructions, and your motor carrier’s procedures.