Red Seal Transport Trailer Technician Practice Exam

Which components typically make up a trailer's suspension system?

1. Leaf springs, air springs, and shock absorbers

2. Brakes, tires, and axles

3. Steering components, hitch, and frame

4. Couplers, electrical wiring, and support beams

The correct answer is: Leaf springs, air springs, and shock absorbers

The components that typically make up a trailer's suspension system are leaf springs, air springs, and shock absorbers. These components work together to provide a smooth ride by absorbing the shocks and bumps encountered on the road. Leaf springs are commonly used in trailer suspensions for their durability and ability to support heavy loads. They allow for flexibility in the suspension, which is essential for maintaining stability and control while the trailer is in motion. Air springs, on the other hand, offer an adjustable level of support and can enhance ride comfort by cushioning the load and providing a smoother ride over uneven surfaces. They are particularly useful for trailers that carry varying loads. Shock absorbers play a crucial role in controlling the motion of the trailer's suspension. They dampen the oscillations caused by the leaf or air springs, preventing the trailer from bouncing excessively and ensuring better handling and stability. In contrast, the other options listed consist of components that do not contribute directly to the suspension system. Brakes, tires, and axles are vital for a trailer's overall functionality but are not part of the suspension. Steering components, hitch, and frame relate more to the trailer's overall structure and maneuverability rather than its suspension. Lastly, couplers, electrical wiring, and