What device is used for mechanically and electrically joining LRVs?

What device is used for mechanically and electrically joining LRVs?

• A. A device to monitor speed
• B. A crossing gate
• C. The power conductor
• D. A device for mechanically and electrically joining LRVs

Answer: (D)

The key idea is how LRVs are linked to form longer trains. To connect two cars, you use a coupler, which provides both a physical link and an electrical connection between the vehicles. This allows power, control signals, and braking information to pass from car to car, enabling them to operate as a single train. Other options don’t fit because they serve different roles: a device to monitor speed is part of traction control, not car-to-car joining; a crossing gate is for safety at street crossings; the power conductor supplies electrical power to a vehicle but does not mechanically join cars. The device that actually performs both mechanical and electrical joining is the coupler.

The key idea is how LRVs are linked to form longer trains. To connect two cars, you use a coupler, which provides both a physical link and an electrical connection between the vehicles. This allows power, control signals, and braking information to pass from car to car, enabling them to operate as a single train.

Other options don’t fit because they serve different roles: a device to monitor speed is part of traction control, not car-to-car joining; a crossing gate is for safety at street crossings; the power conductor supplies electrical power to a vehicle but does not mechanically join cars. The device that actually performs both mechanical and electrical joining is the coupler.