Heavy equipment accounts for a large portion of construction site accidents. The construction schools, therefore, use actual equipment and simulators to train equipment operators to work safely. Existing training with the actual excavation equipment helps trainees to get sensitized to delicate details about machine operations. The feedback process during on-machine training seems, however, suboptimal. This is mainly because feedbacks are currently provided by means of visual inspection performed by the instructors, and mainly communicated verbally. This practice has several problems: