Where does the third rail end?

Where does the third rail end?

• A. Eastbound on LIRR Secondary No. 1 & 2, 500 feet east of Jay Interlocking
• B. Westbound on LIRR Secondary No. 1 & 2, 1040 feet east of Jay Interlocking
• C. Westbound on LIRR Secondary No. 1 & 2, 1040 feet west of Jay Interlocking
• D. Westbound on LIRR Primary No. 1, 1040 feet west of Jay Interlocking

Answer: (C)

The concept here is the boundary of electrified territory—the point where the third rail no longer provides power. In this part of the line, the third rail ends along the westbound direction on the Secondary tracks, specifically 1040 feet west of Jay Interlocking. Beyond that point, the rail is not energized, so traction power isn’t available to trains on Secondary No. 1 & 2. That’s why the westbound position on Secondary No. 1 & 2, 1040 feet west of Jay Interlocking is the correct description. The other options place the end either east of Jay Interlocking or on a different track (Primary), which doesn’t match the defined electrified boundary for this section.

The concept here is the boundary of electrified territory—the point where the third rail no longer provides power. In this part of the line, the third rail ends along the westbound direction on the Secondary tracks, specifically 1040 feet west of Jay Interlocking. Beyond that point, the rail is not energized, so traction power isn’t available to trains on Secondary No. 1 & 2.

That’s why the westbound position on Secondary No. 1 & 2, 1040 feet west of Jay Interlocking is the correct description. The other options place the end either east of Jay Interlocking or on a different track (Primary), which doesn’t match the defined electrified boundary for this section.