Overloading an axle can lead to which outcome?

Overloading an axle can lead to which outcome?

• A. Reduced braking distance
• B. Increased kerbside weight
• C. Increased fuel efficiency
• D. Reduced braking efficiency

Answer: (D)

Overloading an axle means more weight on that axle than the brakes are designed to handle. Brakes must dissipate the vehicle’s kinetic energy as heat; with extra load, more energy has to be removed, which pushes brake temperatures higher. When brakes get too hot, their ability to generate friction falls (brake fade), so the braking force drops and stopping distances increase. The added weight also makes the tyres work harder, which can disturb grip and raise the risk of wheel lock or reduced braking response. All of this leads to reduced braking efficiency. The other outcomes don’t fit because overloading doesn’t magically shorten stopping distances, nor does it create more kerbside weight or improve fuel efficiency.

Overloading an axle means more weight on that axle than the brakes are designed to handle. Brakes must dissipate the vehicle’s kinetic energy as heat; with extra load, more energy has to be removed, which pushes brake temperatures higher. When brakes get too hot, their ability to generate friction falls (brake fade), so the braking force drops and stopping distances increase. The added weight also makes the tyres work harder, which can disturb grip and raise the risk of wheel lock or reduced braking response. All of this leads to reduced braking efficiency.

The other outcomes don’t fit because overloading doesn’t magically shorten stopping distances, nor does it create more kerbside weight or improve fuel efficiency.