What is the minimum distance an employee must go when flag protection is required, with a maximum authorized speed of 41 MPH to 90 MPH?

When flag protection is required, the minimum distance an employee must go is determined by the maximum authorized speed of the train. For speeds between 41 MPH and 90 MPH, the regulation specifies a distance of 1 1/2 miles. This distance is necessary to provide adequate warning and safety for oncoming trains as the flagger is positioned on or near the track. The 1 1/2 mile requirement allows sufficient time for the train crew to react to the flagger's signals, ensuring the safety of both the workers on the track and the train operators. This distance is established based on safety standards designed to mitigate the risks posed by high-speed trains, making it essential for the flagger to be stationed well in advance of the work area.