What is the function of a Switch?

What is the function of a Switch?

• A. Switch
• B. Signal
• C. Interlocking
• D. Station

Answer: (D)

A switch, or turnout, is a device that changes the path of a train by moving the rails so the train can be directed onto a different track. This routing capability lets trains move from the main line to a siding or from one track to another at a junction without stopping or reversing. That core function—altering the track alignment to direct movement—is what the switch is for. In contrast, a station is where passengers board and alight, a signal communicates whether the train may proceed, and interlocking is the safety system that prevents conflicting train movements at junctions. So the switch’s job is to route trains by changing the track alignment.

A switch, or turnout, is a device that changes the path of a train by moving the rails so the train can be directed onto a different track. This routing capability lets trains move from the main line to a siding or from one track to another at a junction without stopping or reversing. That core function—altering the track alignment to direct movement—is what the switch is for.

In contrast, a station is where passengers board and alight, a signal communicates whether the train may proceed, and interlocking is the safety system that prevents conflicting train movements at junctions. So the switch’s job is to route trains by changing the track alignment.