When a train passes a signal requiring movement at restricted speed, how far must it proceed at restricted speed?

• A. Until the next signal is encountered
• B. Until the leading wheels pass the next signal and that signal is more favorable than a restricting or a point where movement at restricted speed is no longer required
• C. Until the track is clear beyond the next interlocking
• D. Until the crew receives a further instruction

Answer: (B)

When a signal directs movement at restricted speed, you must keep that restricted speed until you reach a signal that is more favorable than a restricting signal, and only then can you proceed with normal speed. The key is that the restriction ends when the leading wheels have passed the next signal and that signal no longer imposes restricted movement. This ensures you have a clear view of the subsequent aspect and the block is safe to continue at a higher speed.

In practice, you don’t stop at every signal or wait for a new instruction; you ride the restrictions forward to the point where the next signal indicates it’s safe to accelerate. The other options don’t fit because they either assume waiting for further instructions, waiting for interlocking clearance, or continuing beyond a still-restricting signal.