What is the primary purpose of a baffle in a tank truck?

The primary purpose of a baffle in a tank truck is to control the load surge. When a tank truck is in motion, the liquid inside can shift abruptly during acceleration, deceleration, or turning, creating a phenomenon known as surge. This can lead to unstable driving conditions, making it difficult to control the vehicle. Baffles act as internal barriers that reduce the movement of the liquid, minimizing the effects of surge and helping to maintain stability. By breaking up the liquid into smaller sections, baffles help to dampen the movement of the fluid, which enhances the driver’s control over the vehicle and increases safety.

Other options, while they may sound relevant, do not serve the primary function of baffles. For instance, while improved stability can contribute to better fuel efficiency indirectly, the direct role of baffles is specifically about managing the dynamics of the liquid load. Baffles do not contribute to aesthetic design; their purpose is utilitarian. Additionally, while structural integrity is important for tank trucks, baffles are not primarily for providing structural support; they are specifically designed to manage the flow of liquid to mitigate surge.