Most truck-mounted cranes have a greater lifting capacity over which operating area?

The correct answer is based on the design and engineering of truck-mounted cranes. Generally, these cranes are engineered to have the maximum lifting capacity when operating from the rear. This design takes advantage of the truck's weight distribution and stability, which is optimal for lifting heavy loads straight back. The crane's mounting on the truck often creates a more stable platform and allows for better leverage, enhancing the crane's performance in this direction.

When operating from the front, sides, or ends, the weight distribution and the geometry of the crane can lead to reduced capacities due to increased leverage forces and potential instability. These factors result in a lower lifting capacity for those operating areas compared to that of the rear. A comprehensive understanding of the crane's operational area allows an operator to maximize the crane's effectiveness and ensures safe, efficient lifting operations.