Page 561 - IRSEM_Main Book

7. "ATC Route" means a portion of track where a Train (including Vehicle) can travel
according to the Cab Signal displayed by ATC. There are two types of ATC Routes.
a) Automatic Route – It is applicable for Block Route where ATC Route control
information is automatically controlled and the operator cannot intervene except for
temporary speed restriction.
b) Semi Automatic Route – It is applicable for Station (including Rolling Stock Depot)
Routes (Home Route, Departure Route, Fallback Home Route, Fallback Departure
Route, Yard Route) where the ATC Route control information is automatically
controlled based on Route setting by the operator.
c) "Automatic Train Control (hereinafter "ATC")"is as defined in "General Guidelines for
Management of Implementation Standards".

8. "Automatic Train Supervision (hereinafter "ATS")"means the real time Train control
supervision system which regulates performance levels, monitors and controls the
Trains services and provides data to Controllers to adjust Train services to minimise the
inconveniences caused by Train operation disruptions.

9. "Base Station" means the radio device to communicate with on-board radio device, as
well as with Train Radio network on the ground.
10. "Block Route" is as defined in "General Guidelines for Management of Implementation
Standards".

11. "Cab Signal" is as defined in "General Guidelines for Management of Implementation
Standards".
12. "Cable Gas Pressure Monitoring System" means the system which supplies dry air into
the cable and monitors the gas pressure in order to detect breakage or cut of the cable.

13. "Call Recording System (hereinafter "CRS")" means the system which is installed in OCC
having the function of recording designated incoming/outgoing calls to/from the OCC
such as through a Despatcher Telephone or Train Radio System.

14. "CCTV System for Train Operation" means the system which is installed at the platform
and is used to facilitate the Station staff to monitor the areas at platform where
visibility is not good enough and where the Station staff requires to have assurance in
respect of opening/closing of Train doors.

15. "Centralised Information Control System (hereinafter "CIC" or "CIC System")" means
the system which shall collect and monitor the information of Signalling &
Telecommunication facilities and disaster information necessary for train operation etc.
in real time, and also perform controlling operation for some of Signalling and
Telecommunication equipment.

16. "Centralised Traffic Control (hereinafter "CTC")" is as defined in "General Guidelines for
Management of Implementation Standards".
17. "Contact Detector" means a device mounted on the stock rail at the turnout to check
whether tongue rail and stock rail contacts closely for safe passage of Train.

18. "Control Information Section" means a section where the control information for Cab
Signal is transmitted.
19. "Controller" or "Despatcher" is as defined in "General Guidelines for Management of
Implementation Standards".

Annexure G2: Brief of High Speed Signalling – Mumbai-Ahmedabad Page 504 of 535