What is a turnout (switch) in track work?

• A. A device for measuring wheel alignment.
• B. A mechanism that can redirect a train from one track to another.
• C. A device that tracks speed limits.
• D. A barrier used to block access.

Answer: (B)

Turnout, or a switch, is a mechanism on the rail network that lets a train move from one track to another. It works by moving a pair of rails called the points so they align with either the straight-through track or a diverging track. The stationary rails guide the wheels, and where the rails cross there’s a frog to help trains pass smoothly without derailment. The points are operated by a point machine or other actuators, and signals often control the movement to keep operations safe. Turnouts are placed at junctions, sidings, and crossovers to route trains and give maintenance access as needed. This differs from devices used to measure wheel alignment, or equipment that tracks speed, or barriers that block access.