What is required before a worker can safely approach the tracks?

Before a worker can safely approach the tracks, it is essential that they are clear of the dynamic outline of a train. The dynamic outline refers to the area that encompasses the full movement range of a train as it passes, including potential lateral movement or sway. This safety precaution is crucial because trains are often larger and travel faster than they might appear, making it imperative to ensure that no part of the worker is within this danger zone while approaching or working near the tracks.

Being clear of the dynamic outline helps to prevent accidents and ensures that workers are safe from the risks associated with train movements. It emphasizes the importance of situational awareness and understanding the physical characteristics of trains to minimize hazards during roadway worker activities.