What is referred to as the 'tandem axle' configuration?

Answer: A — Two axles positioned closely together

The 'tandem axle' configuration refers to two axles positioned closely together, typically at the rear of a trailer or vehicle. This arrangement allows for better weight distribution, increased load capacity, and improved stability while driving. When the axles are close together, it minimizes the amount of pivoting motion that can occur when turning, which helps maintain control and reduces tire wear. Having tandem axles also enhances the vehicle's ability to handle heavy loads, making it a popular choice in heavy-duty trucking applications. In contrast to other configurations, the tandem setup effectively divides the weight of the load across multiple wheels, reducing the stress on individual tires and improving traction, particularly on uneven or slippery surfaces. This configuration is critical for maintaining safety and performance standards in commercial trucking.