How far in advance should proper warning flags be placed where men and equipment are working?

Proper warning flags should be placed 2 miles in advance where men and equipment are working to ensure maximum safety on the railway. This distance allows approaching trains ample time to see the warning flags and take necessary precautions, such as reducing speed or stopping, to avoid any potential accidents or injuries.

The rule is based on the need for effective communication of hazards in a timely manner, enabling train crews to make informed decisions as they approach the work zone. Placing flags closer than this distance may not provide sufficient warning, while placing them farther away could lead to confusion regarding the exact location of the work area. Therefore, the 2-mile mark strikes an appropriate balance between visibility and readiness for the train operators.