What is a crossover in rail track design?

• A. A bridge to cross a river.
• B. A single turnout to change tracks.
• C. A set of turnouts that allows trains to move from one track to an adjacent track, often with a short distance between.
• D. A yard for storing cars.

Answer: (C)

A crossover is a set of two turnouts placed in sequence that links two parallel railroad tracks, letting a train move from one track to the other without stopping or reversing. The two turnouts create a continuous path between the tracks, usually with a short distance between them so the transition is smooth for the wheels and train length. This setup is what makes a crossover different from a single turnout, which only diverts a train off its current track and doesn’t provide an immediate route to an adjacent track. It isn’t a bridge, which spans an obstacle, and it isn’t a yard, which is a place for storing and staging cars. Crossovers are common where trains need to switch routing, move between tracks in a yard, or reconfigure track layouts efficiently.