Which of the following is a common cause of truck rollover accidents?

Answer: B — Excessive speed while turning

Excessive speed while turning is indeed a common cause of truck rollover accidents. Trucks have a higher center of gravity compared to passenger vehicles, making them more susceptible to tipping over when navigating turns at high speeds. The centrifugal force acting on the truck during a turn increases significantly as speed increases, which can easily lead to a loss of control and a rollover. The maneuverability of trucks is different due to their size and weight, necessitating slower speeds when making turns. Drivers are trained to assess their speed and adjust as necessary to maintain stability and control, particularly in curves and turns. In extreme cases, not reducing speed appropriately can result in the trailer swinging out and causing the truck to tip over. Understanding the dynamics of truck handling is crucial for safe operation, as rollover accidents can result in severe consequences not only for the driver and their cargo but also for other road users.