What is the signal code for Safety Checkpoint?

What is the signal code for Safety Checkpoint?

• A. 72B
• B. 72
• C. 74
• D. 75

Answer: (A)

In this signaling system, numbers identify a broad operation type, and a following letter narrows it to a specific variant. Safety Checkpoint uses the base number 72 with the modifier B. The B distinguishes this exact scenario from a plain 72, which would be a more general signal, and from other numbers like 74 or 75 that refer to different actions or locations. So 72B clearly indicates a Safety Checkpoint is in effect, guiding units to position, stop traffic, and coordinate as needed at that checkpoint.

In this signaling system, numbers identify a broad operation type, and a following letter narrows it to a specific variant. Safety Checkpoint uses the base number 72 with the modifier B. The B distinguishes this exact scenario from a plain 72, which would be a more general signal, and from other numbers like 74 or 75 that refer to different actions or locations. So 72B clearly indicates a Safety Checkpoint is in effect, guiding units to position, stop traffic, and coordinate as needed at that checkpoint.