What are the three main radio frequencies used by subway personnel?

The correct answer signifies the three main radio frequencies utilized by subway personnel are Division, B1, and B2. These frequencies are crucial for maintaining clear and efficient communication among various teams involved in subway operations.

Division is often assigned to the operational and management staff, ensuring that essential decisions and operational updates can be relayed promptly. Frequencies B1 and B2 typically facilitate communication among train operators and maintenance personnel, allowing for real-time coordination related to train movements, safety alerts, and system updates.

Using designated frequencies helps to minimize interference and ensure reliable communication under varying operational conditions, which is vital in maintaining safety and efficiency in subway systems. This choice reflects an organized method that aids in effective emergency responses and routine operations, showcasing the importance of structured communication protocols in transportation systems.