Why is it dangerous to operate a forklift with a load raised in a straight line or while turning?

• A. Height reduces stability
• B. It increases fuel consumption
• C. It reduces visibility only
• D. It has no effect on stability

Answer: (A)

Raising a load moves the forklift’s centre of gravity higher. Stability depends on where that centre sits relative to the stability triangle formed by the wheels. When the load is high, the CG sits up and outward, widening the tipping moment needed to tip the machine and making it easier to lose balance.

In straight travel, the machine encounters small bumps or uneven surfaces that can tilt the CG forward or backward. In turning, the sideways (centrifugal) force pushes the upper part of the forklift outward; with a tall CG, that sideways tipping moment is much larger, so a turn can cause a tip-over more quickly. Because of this, keeping the load low during movement greatly reduces the risk.

So, the danger comes from the height of the load reducing stability, not from fuel use or visibility.