After operating a switch and before making movements in either direction over the switch, employees must ensure that:

• A. The track ahead is clear for 1000 feet
• B. The switch has been tagged as returned to normal
• C. The switch is locked by padlock, if equipped
• D. The switch is secured from unintentional movement of the switch points by use of a hook, lock, or latch, if so equipped.

Answer: (D)

Securing the switch points so they cannot move on their own is the key safety step here. After you operate a switch, you want to prevent any unintentional movement of the points as you prepare to move over it. If the equipment has a hook, lock, or latch, you must apply it to lock the switch in the set position. This keeps the route fixed and protects against movement caused by weather, vibration, or someone inadvertently nudging the mechanism, until you’ve confirmed the route and obtained proper authority to proceed. The other options aren’t part of this immediate requirement: track clearance distance is a separate consideration, and tagging the switch or returning it to normal isn’t the action described for securing the points.