What is a "tandem axle"?

A tandem axle refers to a configuration where two axles are closely spaced together on the same vehicle. This design is commonly used to improve the vehicle's load-carrying capacity and enhance stability while driving. The close spacing of the two axles allows for a better distribution of weight across the axles, which can be particularly important for heavy loads and ensures that the vehicle maintains better traction and control, especially in challenging driving conditions.

Understanding the tandem axle configuration is essential for CDL holders, as it impacts vehicle handling, braking performance, and compliance with weight regulations. When vehicles are equipped with tandem axles, drivers must be aware of the specific operational characteristics that come with that axle setup, including turning radius and parking considerations.