After completing a partial delivery, a driver leaves the remaining heavy freight stacked along the upper cargo racks near the trailer roof instead of moving it down to the floor. How does this arrangement impact vehicle safety?
- The elevated center of mass significantly increases the danger of a rollover during cornering and lane changes.Answer
- BThe reduction in total gross cargo weight offsets the vertical height, keeping vehicle roll stability unchanged.
- CThe top-heavy load can safely negotiate sharp highway exit ramps at posted advisory speeds by braking midway through the curve.
- DThe high freight placement primarily increases straight-line stopping distance while leaving lateral handling unaffected.
Answer
The elevated center of mass significantly increases the danger of a rollover during cornering and lane changes.
Loading heavy freight high up raises the combination vehicle's center of gravity. A high center of gravity severely compromises lateral stability, making the vehicle susceptible to rolling over on curves, exit ramps, or during sudden lane changes, even at speeds below posted advisory limits.
Step-by-Step Solution
Key Concept
Cargo Center of Gravity and Rollover Dynamics
Estimated Time:1m 0s