What can happen if the minimum distance near open trenches is not observed?

Observing the minimum distance near open trenches is critical primarily for safety reasons. When this distance is not maintained, the risk of a trench collapse significantly increases. Trenches are often excavated to depths that can compromise their structural integrity if heavy loads or equipment are operating too close to the edge. The soil around the trench can become unstable, leading to possible cave-ins that can endanger workers and equipment.

Additionally, maintaining safe distances not only protects the integrity of the trench but also the safety of personnel working nearby. Other factors, such as vibrations from moving machinery or load shifts, can contribute to destabilizing the trench walls if operators or vehicles are positioned too closely.

In contrast, the other options presented do not address the critical safety protocols necessary around trench work. While better access, faster transportation, and increased visibility may seem appealing, they do not outweigh the paramount importance of maintaining a safe working environment, which is directly compromised by neglecting the minimum distance regulations.