The Central Time System enables the management of the hours used in public transportation systems such as subway, train, tram lines from a single center, and the synchronisation of all electronic systems.


The central clock system consists of a GPS-based main clock and analog and digital clocks working connected to it. It also provides the synchronization of other electronic systems such as Passenger Information, Announcement, CCTV, Toll Collection that connects to the main clock via NTP (Network Time Protocol).

The rail system, where simultaneous operation is important, provides central control by creating a single clock reference at points such as factories, hospitals.