What is the purpose of guy wires in the Overhead Traction Power System?

• A. They carry power
• B. They provide stability to stanchions
• C. They are used to ground track circuits
• D. They provide signaling data

Answer: (B)

Guy wires stabilize the overhead structure. These tensioned cables anchor the support poles and masts to the ground (or to other anchors) to resist wind, trains, and other forces, keeping the stanchions vertical and the overhead line geometry in the correct position. This stability is essential for maintaining the proper height and alignment of the contact wire so the pantograph can reliably pick up power and maintain good contact.

They don’t carry power, so they aren’t used to feed electricity. They also aren’t used for grounding track circuits or sending signaling data. The main role is structural stability and geometry maintenance, which is why they provide stability to the stanchions.