#NewYorkCitySubway

A detailed exploration of the fourth rail on the IND Rockaway line in New York City.
The addition of the fourth rail serves to mitigate the risks of leakage and stray current. By offering an additional path, the second rail facilitates smoother current flow, ensuring a controlled return to the Traction Substation.
Stray currents present hazards, as they may prompt electricity to seek alternative paths through the ground, potentially damaging structures and utilities, and leading to problems such as electrolysis and erosion. Incorporating the fourth rail helps address these risks by providing a more regulated route for current flow with less resistance.
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