A commercial motor vehicle is transporting heavy freight that was loaded high off the trailer floor and biased toward the right sidewall. What is the most critical hazard this vehicle faces when navigating a sharp left-hand curve?
- AThe uneven lateral load will overheat the steer tires and cause an instantaneous loss of steering control regardless of travel speed.
- BThe driver must counteract the tipping forces by applying firm service brakes while actively steering through the curve.
- The elevated center of gravity combined with outward centrifugal force on the overloaded right side drastically reduces stability, creating an extreme rollover hazard.Answer
- DThe high center of gravity will cause the drive axle differential to lock automatically, preventing torque delivery to the wheels.
Answer
The elevated center of gravity combined with outward centrifugal force on the overloaded right side drastically reduces stability, creating an extreme rollover hazard.
Placing heavy cargo high in the trailer raises the vehicle's center of gravity, which drastically lowers the speed threshold required to cause a rollover. Navigating a left-hand curve generates centrifugal force toward the right; when combined with freight already positioned toward the right side, the cumulative outward force tips the trailer over easily.
Step-by-Step Solution
Key Concept
Cargo Balance and Center of Gravity Dynamics
Estimated Time:1m 0s