Which of the following is an essential part of emergency response training for rail workers?

Understanding first aid and CPR techniques is crucial for rail workers as it directly pertains to their ability to respond effectively in emergency situations. In the event of an accident or injury on-site, having trained personnel who can provide immediate medical assistance can be vital in saving lives and mitigating further harm.

First aid knowledge enables workers to assess an injured individual's condition, perform necessary interventions, and provide care until professional medical help arrives. CPR is particularly important as it is a lifesaving technique used in emergencies where someone's breathing or heartbeat has stopped.

In contrast, while operating heavy machinery is an important skill, it is not specific to emergency responses. Learning about train schedules and explaining the history of railway systems are also valuable for overall operations and knowledge of the industry, but they do not equip workers with the immediate skills needed to handle emergencies effectively. Therefore, first aid and CPR are essential components of emergency response training that ensure rail workers are prepared to protect themselves and others in critical situations.