Which of the following is a sign of an unsafe condition while driving a tanker?

Answer: B — Excessive swaying or rocking of the tanker

Excessive swaying or rocking of the tanker is definitely a sign of an unsafe condition while driving. This phenomenon, often referred to as "trailer sway," can occur due to various factors such as high winds, improper loading of the tank, or sudden maneuvers. When a tanker sways or rocks, it indicates that it may be at risk of losing stability, which can lead to loss of control and potentially cause an accident. Drivers need to be particularly vigilant about this condition, as it directly impacts the safe management of the vehicle and the cargo it carries. In contrast, smooth acceleration and deceleration, maintaining a steady speed, and proper signaling before lane changes are all indicators of safe driving practices. These actions demonstrate control and awareness of the vehicle’s handling characteristics, especially important in a tanker, where the weight and movement of liquid cargo can significantly affect stability and response. Adhering to these safe driving techniques helps minimize risks and ensures better handling of the vehicle under various conditions.