ATC (Automatic Train Control)

ATO

ATP

ATS

Automatic Train Protection

Automatic Train Supervision

Automatic Train Operation

Detection

Detect presence of train

Transmit data

Wayside equipment

Train on track circuits

Track train headway/arrival

Indication of stopping position

Operation of start & stop

Safety system

Safe spacing between trains

Provide sufficient warning for train stoppage

Generate timetables for train schedules

Obtain train position

Obtain speed information from ATP

Obtain train arrivals information from ATO

Obtain train depatures infromation from ATO

Issue routing commands automatically

Facilitate remote central control of train service

Train service data and events such as faults , alarms , train delays