What is the role of the articulation joint in a school bus?

Answer: B — To accommodate turning and reduce stress on the body and frame

The articulation joint plays a critical role in enabling the flexibility necessary for the bus's operation, particularly during turning maneuvers. By allowing the front and rear sections of the bus to pivot relative to each other, the articulation joint reduces the stress that would otherwise be placed on the vehicle's body and frame. This is especially important given the size and weight of school buses, which can experience significant forces during cornering. Furthermore, maintaining the integrity of the bus structure helps ensure passenger safety and prolongs the vehicle's service life. This function of the articulation joint is vital for the overall handling and performance of the bus, allowing it to navigate tight corners and turns more effectively.