Which option correctly defines the contact wire in an LRV system?

Which option correctly defines the contact wire in an LRV system?

• A. A device for mechanically joining LRVs
• B. A crossing gate
• C. The control device on duty
• D. An overhead electrical conductor which provides power to the LRV through direct contact with the pantograph

Answer: (D)

The contact wire is the overhead electrical conductor that delivers power to the LRV by letting the pantograph glide along it and draw electricity for the traction motors. It’s part of the electrified traction system suspended above the tracks, with the pantograph maintaining contact as the train moves, while the return current travels through the rails. The other options describe a coupling device, a crossing gate, or the control equipment—things unrelated to how power is collected. So the defining idea is that the contact wire provides power through direct contact with the pantograph.

The contact wire is the overhead electrical conductor that delivers power to the LRV by letting the pantograph glide along it and draw electricity for the traction motors. It’s part of the electrified traction system suspended above the tracks, with the pantograph maintaining contact as the train moves, while the return current travels through the rails. The other options describe a coupling device, a crossing gate, or the control equipment—things unrelated to how power is collected. So the defining idea is that the contact wire provides power through direct contact with the pantograph.