What is the risk of overloading a truck or bus?

Overloading a truck or bus significantly compromises braking ability. When a vehicle is loaded beyond its designed weight capacity, the extra weight increases the distance required to bring the vehicle to a stop. This is due to the fact that the braking system is not designed to handle loads beyond the manufacturer's specifications. As a result, the additional weight can lead to longer stopping distances, increased wear on brake components, and a higher likelihood of brake failure in emergency situations. This poses a serious risk to both the driver and others on the road, as it can lead to accidents or collisions that might otherwise have been avoidable if the vehicle had been appropriately loaded.

In contrast, the other options present misleading assertions. Although some may think that overloading might improve fuel economy or increase speed, the reality is that it generally leads to decreased performance and heightened hazards. Additionally, it's important to acknowledge that overloading does negatively impact driving safety, making it a critical consideration for all commercial drivers.