Is it true that freight trains never change their schedules?

Freight train schedules are not fixed and can indeed vary frequently. This variability can depend on numerous factors, including the availability of cargo, track conditions, and operational requirements. Unlike passenger trains that may have more stringent schedules due to timetables and connections, freight trains operate under a system that prioritizes timely delivery, which can lead to adjustments based on demand and other logistical considerations. Additionally, factors like the need to allow for maintenance on tracks or the movement of other trains can further affect their schedules, making it crucial to understand that freight train operations are much more flexible compared to the rigid schedules typically associated with passenger services.