What does a use of 213.9b indicate about the track in question?

A use of 213.9b signifies that the track in question does not meet all requirements needed for its intended class. This specific designation typically points to certain deficiencies or non-compliance issues that must be addressed to ensure safety and operational efficiency. In practice, this designation serves as a flag for maintenance or corrective actions needed to bring the track back to compliance with regulatory or safety standards.

Consequently, this understanding emphasizes the importance of maintaining tracks to ensure they function safely for their designated purposes, underscoring the necessity for regular inspections and compliance checks.