Which device is located in line-of-sight restricted areas to indicate train occupancy?

• A. Block Indicator
• B. Signal
• C. Beacon
• D. Indicator Light

Answer: (A)

In areas where the track block must be read directly by eye, the device used to show whether a train is in that block is the block indicator. It provides a local, visible indication of occupancy—telling crews at the block boundary whether the block is occupied or clear—without needing distant signals or radios. Signals convey movement authority to proceed, but they’re not specifically the occupancy indicator for a restricted area. Beacons and generic indicator lights serve broader warning or status purposes and aren’t the standard tool for showing block occupancy. So the block indicator is the best choice for indicating train occupancy in line-of-sight restricted areas.