Interlocking or CP signals governing entrance to or within the affected track may be displayed to authorize movement that have received what authority?

Interlocking or CP signals governing entrance to or within the affected track may be displayed to authorize movement that have received what authority?

• A. Timetable authority
• B. Form D line 2 authority
• C. Dispatcher verbal instruction
• D. Bulletin Order

Answer: (B)

When entering or moving within an interlocking or controlled point, the train can proceed only with a formal authority issued for that specific movement. In this case, the authority is Form D line 2, a dispatcher-issued instruction that authorizes the exact movement through or within the affected track. This Form D line 2 authority is the standard, documented way to permit such movements, and signals may display this authority so the crew has clear, immediate proof at the point of movement. Timetable authority covers general, published schedules and isn’t tailored to entry into an interlocking. Dispatcher verbal instructions can occur in some situations, but NORAC practice relies on the written Form D line 2 for signaled entrances, ensuring a precise, recorded authorization. Bulletin Orders apply to broader or ongoing instructions rather than the specific movement through the interlocking.

When entering or moving within an interlocking or controlled point, the train can proceed only with a formal authority issued for that specific movement. In this case, the authority is Form D line 2, a dispatcher-issued instruction that authorizes the exact movement through or within the affected track. This Form D line 2 authority is the standard, documented way to permit such movements, and signals may display this authority so the crew has clear, immediate proof at the point of movement.

Timetable authority covers general, published schedules and isn’t tailored to entry into an interlocking. Dispatcher verbal instructions can occur in some situations, but NORAC practice relies on the written Form D line 2 for signaled entrances, ensuring a precise, recorded authorization. Bulletin Orders apply to broader or ongoing instructions rather than the specific movement through the interlocking.