Which is a common reason for a track warrant to be canceled?

• A. The train clears the authority, track becomes unavailable due to maintenance, or priority for another train.
• B. The track is closed due to a storm.
• C. The warrant expires automatically.
• D. The dispatcher withdraws the crew.

Answer: (B)

The main idea is that a track warrant is valid only while the track section is available and safe to use. If weather or other conditions make that track inaccessible, the warrant must be canceled so trains don’t enter a section that’s not usable. A storm closing the track is a direct and straightforward reason: it immediately makes the track unsafe or unusable, so canceling the warrant prevents any movement into that area until service can safely resume. In practice, officials will revoke the authority when the track is shut and issue new instructions once it’s reopened.