When may a crew member pass a signal displaying Stop and Proceed indication without stopping?

A crew member may pass a signal displaying a Stop and Proceed indication without stopping when track and time has been granted. This scenario typically indicates that the crew has received authorization from the dispatcher or train management to occupy a designated section of track, allowing them to proceed under caution, even past a signal that would normally require them to stop.

In the context of rail operations, track and time is a critical procedure that ensures safety by allowing crews to work within a defined segment of track, safeguarding them from potential conflicts with other trains or operations. Following the proper protocols for track and time ensures that the crew can continue safely while still adhering to necessary precautions, such as reduced speed and vigilant monitoring of the track ahead.

The other choices highlight situations that do not permit bypassing the Stop and Proceed signal without a full stop. Interlockings are systems designed to prevent conflict between trains but do not allow for moving past a Stop and Proceed signal without stopping unless the proper procedures are in place, such as track and time. Under normal circumstances, when a signal displays Stop, safety procedures dictate that the train must stop. Adverse weather conditions may necessitate extra caution, but they do not provide an exemption from the requirement to stop.