Which symbol marks a work zone on the PTC screen?

Which symbol marks a work zone on the PTC screen?

• A. Red Track Line
• B. Green Hash Box
• C. Blue Hash Box
• D. Yellow Hash Box

Answer: (C)

PTC displays use color-coded symbols to convey track conditions at a glance. A work zone is shown as a blue hash box. This distinct symbol flags an area where maintenance or construction is active, prompting crews to slow down, follow work-zone rules, and be prepared for follow-on instructions from dispatch or the signal system. The other symbols indicate different conditions: a red track line typically denotes a restricted or out-of-service section, while green or yellow hash boxes refer to other statuses not specifically a work zone.

PTC displays use color-coded symbols to convey track conditions at a glance. A work zone is shown as a blue hash box. This distinct symbol flags an area where maintenance or construction is active, prompting crews to slow down, follow work-zone rules, and be prepared for follow-on instructions from dispatch or the signal system. The other symbols indicate different conditions: a red track line typically denotes a restricted or out-of-service section, while green or yellow hash boxes refer to other statuses not specifically a work zone.