A block signal conveying Restricted Proceed as the most restrictive aspect has which marker?

A block signal conveying Restricted Proceed as the most restrictive aspect has which marker?

• A. G marker
• B. C marker
• C. APP marker
• D. P marker

Answer: (D)

Markers on the track indicate the current signal aspect you are authorized to follow. The P marker specifically signals Restricted Proceed, which is the most restrictive movement allowed in a block. It tells you to move with restricted speed and be prepared to stop within the block or at the next signal, due to conditions ahead. That’s why it’s the best choice here. The other markers point to different signal aspects (for example, APP relates to Approach, while G and C indicate other, less restrictive indications) and do not denote Restricted Proceed.

Markers on the track indicate the current signal aspect you are authorized to follow. The P marker specifically signals Restricted Proceed, which is the most restrictive movement allowed in a block. It tells you to move with restricted speed and be prepared to stop within the block or at the next signal, due to conditions ahead. That’s why it’s the best choice here. The other markers point to different signal aspects (for example, APP relates to Approach, while G and C indicate other, less restrictive indications) and do not denote Restricted Proceed.