Which term designates a designated track whose entrance and exit are governed by home signals?

• A. Main Track
• B. Controlled Siding
• C. Secondary Track
• D. Industry Track

Answer: (B)

The idea being tested is how access to an auxiliary track is protected by signals. A controlled siding is a designated siding where both ends are controlled by home signals, so trains must receive a cleared home signal to enter and to leave that track. This setup runs an interlocking with the main line, ensuring that movements into and out of the siding don’t conflict with trains on the adjacent track. That exact description—a track whose entrance and exit are governed by home signals—is what defines a controlled siding. Other track types—like the main track, a generic secondary track, or an industry track—do not inherently carry that specific requirement of control by home signals at both ends.