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(vii) It will be possible to edit the timetable graphically from the Train Graph
display by drag and drop operations.

(viii) The Timetable software will automatically perform the reforecasting of
the future train trips when modifications are being performed either by
the operator or due to traffic perturbations.

(ix) The Train Distance Graph will highlight traffic conflicts and will assist
the regulator in identifying and implementing solutions to resolve
conflict situation like - Same platform use.

13.4.4 Simulation Studies on Simulation terminal: Separate terminal may be
provided for simulation studies & training purpose. The replay of log, time table
editing, editing of train graph etc. will be provided on this terminal.

13.4.5 Time Table Builder and Editing:

Based on data base of infrastructure like signal distances, permitted speed of
trains, Signal interlocking, track circuit lengths etc. required for generation of
time table, time table builder, an off-line software, will prepare a time table.
Time table so generated can be modified/edited offline and after testing of
same on simulator terminal, can be loaded on the TDS system.

13.4.6 Event Log and Alarm Management System:

(a) Event Log: All important events (command, indications, errors, system
information etc.) will be logged in a database for later printing and analysis.

(b) Replay of Event log: The replay function will show an history of events that
has happened earlier in the TDS system. The replay function will display,
among other details, the dynamic status for infrastructure, train number and
alarm list.

(c) Traffic Related Alarms: Vital traffic operation related alarms can be

(i) Train not described.

(ii) Any unscheduled Train stoppage.

(iii) Routes not released after passage of train.

(iv) Failure of Signalling gear.

(d) Network Related Alarms: All alarms not directly related to traffic operations
are considered to be Network related alarms. Failure of Network
Communication/inability to access any of the nodes, defective terminals,
and hardware & software failures will be flashed.

Chapter 13: ATP, ETCS, IRATP (TCAS) & TMS Page 292 of 535