What must occur when working with a group of four or more pieces of on track equipment (OTE)?

When working with a group of four or more pieces of on track equipment, it is crucial for the Engineering and Inspection Coordinator (EIC) to conduct a job briefing with the crew. This job briefing is essential for ensuring that all team members are aware of the tasks at hand, the specific roles and responsibilities assigned to each individual, and any potential hazards associated with the operation of multiple pieces of equipment.

Conducting a job briefing promotes effective communication and collaboration among the team members, reducing the likelihood of misunderstandings that could lead to accidents or operational inefficiencies. By discussing safety protocols, work procedures, and emergency plans during this briefing, the crew can operate more cohesively and safely when handling multiple pieces of equipment in close proximity.

The other options lack the necessary measures to ensure safety and communication when managing multiple pieces of equipment, highlighting why the job briefing is not only beneficial but essential in this context.