What system is typically used for monitoring and controlling traction?

The Train Control and Monitoring Systems (TCMS) is typically used for monitoring and controlling traction because it serves as a critical component of modern train operations. TCMS integrates various subsystems of a train, including traction control, braking, and other onboard systems, enabling efficient and safe train performance. This system collects real-time data regarding the train's status, power supply, and operational parameters to ensure that everything functions correctly. Additionally, it can help optimize traction performance by adjusting power delivery to the traction motors based on current conditions, enhancing both safety and efficiency.

While the other systems mentioned serve important roles in railway operations, they do not specifically focus on the control and monitoring of traction. For instance, Train Scheduling Systems help with the planning and organization of train movements, Railway Maintenance Systems are concerned with the upkeep and repair of railway infrastructure, and Passenger Information Systems provide real-time updates to passengers regarding train schedules and statuses, but none of these directly manage traction control and performance as TCMS does.