Page 103 - 捷運技術 第35期

捷運技術半年刊 第 35 期 95 年 8 月 95

˙TWC Indications: to monitor Automatic Train Control（ATC）data received via the
interlocking system using train-wayside communication（TWC）.
˙TWC Controls：to update Automatic Train Control（ATC）data via the interlocking system
using train-wayside communication（TWC）.

3.2 Automatic Control Functions:
˙Online Timetable Management（OTM）： to manage and modify the online（in-use）schedule.

˙Automatic Route Setting（ARS）： to manage the routing of trains from terminals according
to the schedule.
˙Automatic Train Regulation（ATR）：to regulate traffic according the schedule and
line-operating mode by sending appropriate controls to the ATC or Interlocking. The three
line-operating modes supported by ATR include:

˙Scheduled Regulation（Normal）：ATR regulates trains by adhering to scheduled departure
and arrival times at stations; disturbances are managed through adjustment of dwell times on
station platforms and inter-station running times（performance level）.

˙Managed Regulation（Headway）：ATR regulates trains by adhering to the schedule, as above,
while at the same time trying to manage uniform intervals（headways）between departing
trains by applying additional hold（retention）time to a train based on a comparison of the
delays with the train ahead, and any retention time already imposed by the train behind.
˙Constant Headway Regulation（Provisional）：ATR regulates trains without use of schedule
by maintaining a constant headway between trains as defined by the ATS user. This mode is
used in cases of degraded operations to provide provisional service such as when part of the
line may be out of service（flood gate operation）.
3.3 Support Functions：

˙Subsystem Supervision：to control and monitor the external communication interfaces and
ATS equipment（servers, workstations, etc.）
˙Time Management: to manage the reference time from an external Master Clock, and
synchronize the time of ATS connected equipment.

˙Topology Management：to provide a technical and operational view of the rail network to
other components.
˙Alarms & Events Management: to generate and display alarms and events.

˙Territory Assignments：to manage the assignment of exclusive control of interlockings to
authorized ATS users.
˙Archiving: to archive and purge data from the historical database, and allow subsequent
restoration at a later date, if needed.

3.4 Offline Functions:
˙Offline Graphical Timetable：to create, manage and modify timetables offline using a
graphical time-distance chart that provides tools for conflict detection and resolution, and
these enhancements to improve service to the riding customers:
★Reduce Platform Congestion：to avoid the simultaneous arrival of trains operating in
different directions on the same line during peak hours at specific stations.