Red Seal Transport Trailer Technician Practice Exam

The distinction between a single axle trailer and a tandem axle trailer primarily lies in the number of axle assemblies present. A single axle trailer features one axle with a single wheel assembly on each side, resulting in a total of two wheels. In contrast, a tandem axle trailer has two axles, with a wheel assembly on each side of both axles, leading to a total of four wheels. This configuration allows the tandem axle trailer to distribute weight more effectively, enhancing load stability and balance.

The additional axles in a tandem setup facilitate better weight distribution, which enables the trailer to carry heavier loads compared to a single axle trailer. Furthermore, both configurations serve different purposes; single axles generally cater to lighter loads or shorter distances, while tandem axles provide better support for heavier cargo. Understanding this fundamental difference in wheel assembly is crucial for professionals in the transportation industry to determine appropriate trailer types for specific hauling needs.