Define "overweight" regarding commercial vehicles.

Answer: B — vehicle exceeding its defined GVWR or weight limits

Defining "overweight" in the context of commercial vehicles revolves around the concept of gross vehicle weight rating (GVWR). A vehicle is considered overweight when it exceeds its defined GVWR, which is the maximum weight a vehicle is rated to safely carry, including its own weight and that of any cargo and passengers. Understanding this definition is crucial because operating an overweight vehicle can lead to safety hazards, increased wear and tear on the vehicle, and legal consequences, such as fines and penalties. It’s essential for drivers and fleet operators to be aware of their vehicle’s weight limits and ensure that they do not exceed them to maintain compliance and safety standards on the road. This focus on GVWR distinguishes it from the other options, which either suggest that a vehicle is underweight or loaded within acceptable limits, neither of which aligns with the definition of "overweight."