When may switches be left in the reverse position?

The most accurate scenario in which switches may be left in the reverse position is when authorized by the crew or switch tender. This reflects the operational protocols established by the Northeast Operating Rules Advisory Committee (NORAC). Switches are critical components in the rail system, and any alteration to their positioning must be governed by proper authorization to ensure safety and operational integrity.

When a crew or switch tender has determined that leaving a switch in the reverse position serves a necessary function—such as directing a train onto a particular track or ensuring safe passage—this authorization makes it permissible. This decision must be based on clear communication and an understanding of the current operational needs, as any unapproved changes to switch positions can lead to hazardous situations.

In contrast, other conditions such as a newly installed switch, the designated position for a route, or maintenance periods generally carry stipulations that do not allow for switches to remain in the reverse position unless specific criteria are met. For instance, switches should not be left in the reverse position solely based on its installation status or expected usage without proper guidelines and authorization in place. Understanding when and how a switch can be left in a particular position is crucial for maintaining safe and efficient rail operations.