Bay Area Rapid Transit (BART) Practice Exam

To confirm that the Master Control and Safety System (MCSS) is operational, cycling through all modes is a critical step. This process allows operators to verify that the system can switch between different operational states as designed. By testing each mode—such as manual, automatic, and safety checks—operators can ensure that the MCSS functions correctly under various conditions and is capable of responding appropriately to operational requirements.

The operational integrity of the MCSS is vital for maintaining safety and efficiency in transit operations, and cycling through the modes provides comprehensive feedback about its readiness for service. If the system fails to respond correctly in any of the modes, it indicates a potential issue that needs to be addressed before resuming normal operations.