How long is a timetable in effect for?

A timetable is designed to be effective from the moment it takes effect, establishing a clear starting point for its use. This clarity is essential for operations, ensuring that all employees and relevant personnel are aware of the schedule and can plan accordingly. The timetable provides vital information on train movements, stops, and operational guidelines that must be followed from the specified effective date onward.

The options related to one month, indefinitely, and until cancelled offer various perspectives but do not accurately define the operational use of a timetable. Timetables are not arbitrarily limited to a month; they are not permanent unless specified otherwise; and although they can be cancelled, the primary focus is on their effective start time, which is a critical factor for safe and efficient rail operations.