What type of suspension system is commonly used in school buses?

The leaf spring suspension system is commonly used in school buses due to its robust design and ability to carry heavy loads. Leaf springs consist of multiple layers of spring steel that are fitted together, allowing for significant strength and load-bearing capabilities, which is essential in the case of school buses that transport many students and equipment.

This suspension type provides a good balance between ride comfort and load capacity, which is crucial for vehicles that operate in varied road conditions and need to ensure passenger safety. Additionally, leaf spring suspensions are well-suited for vehicles that require extra durability over long periods of operation, making them ideal for accommodating the rigorous demands placed on school buses.

While other options have their applications, the leaf spring suspension's proven performance, strength, and reliability in commercial vehicle contexts make it the preferred choice for school buses. This choice helps to ensure stability and reliability, which are vital for student transportation.