What signals must a T/O be familiar with while moving through the yard?

A Train Operator (T/O) must be familiar with all signals and signs present while moving through the yard because these signals are crucial for safe operations. The yard environment presents various potential hazards and situations that can affect train movement. By understanding and adhering to all signals, the T/O can effectively navigate the area, ensuring the safety of themselves, their crew, and any other personnel present. Each signal and sign may convey essential information about track status, speed restrictions, and other important operational directives required to maintain safety and efficiency in a potentially complex and dynamic setting. This practice is vital in preventing accidents and maintaining smooth operations within the BART system.