TRAA National Driver Certification Practice Exam

The reasoning for selecting the option regarding the power source of carrier beds as the statement that is not true hinges on the typical functioning and design of car carriers. Generally, car carriers are equipped with hydraulic lifts, which are essential for lowering and raising vehicles onto the flatbed. These hydraulic systems are usually powered by a PTO (Power Take Off) system or other mechanical methods, rather than being electrically powered. Therefore, the assertion that carrier beds are generally powered electrically is misleading and does not align with standard industry practices.

As for the other statements, they accurately reflect the characteristics of car carriers. Carriers indeed have aluminum beds that typically measure between 17 to 21 feet, which allows them to transport vehicles safely and effectively. Light-duty carriers being built on a truck chassis with a Gross Vehicle Weight Rating (GVWR) ranging from 14,500 to 19,000 pounds correctly describes the classification and capacity of these vehicles. Finally, while car carriers are primarily designed for transporting vehicles, they can also be adapted for transporting cargo, reflecting their versatility in various transport scenarios.