Which of the following is NOT a common type of forklift?

The correct answer is Dumper truck, as it fundamentally differs from the common types of forklifts which are primarily designed for lifting and moving materials in various warehouse and industrial settings.

Counterbalance forklifts are widely used for their versatility and ability to lift heavy loads while balancing the weight with their rear counterweights. Reach trucks are designed specifically for narrow aisles and can extend their forks to reach high shelves, making them optimal for warehouse environments. Cherry pickers, while sometimes associated with forklift operations, are specific to lifting personnel to elevated areas and are categorized separately from standard forklifts.

In contrast, a dumper truck refers to a vehicle intended for transporting bulk materials, often featuring a bed that can be raised to unload its contents. Its functionality and design do not align with the operational capabilities of forklifts, which are primarily focused on picking, lifting, and stacking materials rather than transporting bulk loads over long distances.