What is considered a "TBA" in RWP terminology?

In Roadway Worker Protection (RWP) terminology, the term "TBA" stands for "Temporary Blockade Authority." This concept is crucial for ensuring the safe management of work zones where employees are exposed to the risks associated with railway operations. A Temporary Blockade Authority is a safety measure that allows for the establishment of blocks or restrictions on the movement of trains through specific areas where workers are present. It provides the necessary protection by officially notifying train crews of the work being conducted, thereby preventing unauthorized train movement in potentially hazardous zones. This term is part of the broader framework of regulations and practices designed to safeguard roadway workers while they perform their duties in proximity to active railroad tracks.