CDL Tanker Endorsement Practice Exam

Why should tankers equipped with baffles be handled differently than those without?

1. Baffles allow for more cargo

2. Baffles reduce surge during transport

3. Baffles make the tanker lighter

4. Baffles are more stable in turns

The correct answer is: Baffles reduce surge during transport

Baffles are structures within a tanker that help to control the movement of liquid cargo during transport. When a tanker makes turns, accelerates, or decelerates, the liquid can surge, creating waves that can destabilize the vehicle. The presence of baffles significantly reduces this surging by breaking up the movement of the liquid and encouraging a more controlled flow. This means that drivers operating tankers with baffles need to adjust their handling techniques when compared to those without. For example, they should be more aware of the potential for reduced stability when navigating curves or during sudden changes in speed, and they need to manage their driving in a way that accommodates the different dynamics caused by the baffles and the liquid's reduced movement. While other factors listed in the options may pertain to the characteristics of tankers, they do not address why handling should differ in relation to the presence of baffles. The correct understanding of baffles’ impact on liquid surge is crucial for maintaining safety and control while transporting liquid cargo.