Page 575 - IRSEM_Main Book

S No Term Description/Meaning in SEM Relevant paras
Approved Type
10 A Design approved by RDSO/Competent authority
of Design
11 Assurance Confidence in achieving a goal being pursued. Declaration intended to give confidence. Annexure: G1
Audio Is a joint-less Track circuit, uses audio frequencies fed to track, to detect the presence or 17.4.1, 17.5.2(h),
Frequency absence of a train. 17.5.3(d,e,f), 17.5.3,
12
Track Circuit 22.7.5(b)
(AFTC)
Systematic, independent, documented process for obtaining records, statements of fact or 3.5.7(a)
13 Audit other relevant information and assessing them objectively to determine the extent to which
specified requirements are fulfilled.
Means the person who is duly empowered by general or special order of the Railway
Authorized
14 Administration, either by name or by virtue of his office, to issue instructions or to do any
Officer
other thing.
Authority To Means the authority given to the Loco Pilot of a train, under the system of working, to enter
15
Proceed the block section with his train
16 Automatic A system that enforces compliance with signal interlocking and speed restrictions. Automatic 5.2.2, 5.2.3(d), 5.3.2(c),
Train Train Protection (ATP) comprises of the sub-systems which provide the basic safety by way of 11.1.2(f), 13.1.2, 13.1.3,
Protection fail-safe detection of dangerous conditions and controlling and stopping the train when 13.1.5(a),13.1.7(a,b),
System (ATP) required independent of any action by the driver when the train is being driven manually. 13.2.1, 13.2.2(a),
ATP also ensures similar fail safe protection even when train is being driven automatically. 13.2.5(i), 13.3.1(b),
13.4.1(c),
13.4.9(g),13.4.10
Automatic Automatic Train Operation (ATO) which comprises of sub-systems which can enable Annexure: G2
Train automatic operation of the train without any intervention by the driver except for closing of
17
Operation the train doors. ATO obtains the safety instructions from ATP and other operational
(ATO) information from the ATS system automatically and runs the train as required.

Annexure: G4: Glossary of Technical Terms for Signal Engineering Manual Page 515 of 535