Tender invited for Development of Train Collision Avoidance System

ISO 9001: 2008 Effective from 18.06.2012 RDSO/SPN/196/2012 Version 3.1.1
Document Title : Specification of Train Collision Avoidance System
MTBWSF Mean Time Between Wrong Side Failures
OCIP Operation Cum Indication Panel
OFC Optical Fiber Communication
RAM Random Access Memory
RAMS Reliability, Availability, Maintainability & Safety
RDSO Research Designs & Standards Organisation
RE Railway Electrification
RF Radio Frequency
RFID Radio Frequency Identification
ROM Read Only Memory
RS485 Recommended Standard 485
RTS Ready To Send
SIL Safety Integrity Level
SOS Save Our Souls – A distress message
SPAD Signal Passing at Danger
SRS System Requirements Specification
TCAS Train Collision Avoidance System
TIN Track Identification Number
UNISIG European Signalling Industries
3.2 Definitions:
3.2.1 Acceptance Tests:Tests carried out on the equipment/ system for the
purpose of acceptance of the equipment/ system.
3.2.2 Banking/ Coupled mode: When, in addition to main leading loco, one or
more locomotives are there in the train, other locomotives are said to be in
Banking/ Coupled mode.
3.2.3 Berthing Track: This is the designated section of the track in station section
on which trains normally stop e.g. Platform lines etc.
3.2.4 Block Section: The portion of the running line between two block stations
onto which no running train may enter until Line Clear has been received from
the block station at the other end of the block section.
3.2.5 Cross Approval: A process of approval of foreign firms for their proven
products/ systems through their Indian counter parts or supplier.
3.2.6 Driving Cab: The cab where controls etc. are provided for the Driver to run
the locomotive/ train.
3.2.7 Driving Position: The position in the locomotive from where driver runs the
locomotive/ train. Electric locomotives, some diesel locomotives, EMU,
MEMU, DEMU etc. have separate driving cabs for either direction driving and
therefore have one driving position in each cab. However, most diesel
locomotives have only one cab having two driving positions i.e. one for each
direction driving.
3.2.8 Dynamic speed profile: The speed-distance curve which a train may follow
without violating the static train speed profile and the end of movement
authority. This curve depends on the braking characteristics of the train and
the train length.
3.2.9 End of Authority (EOA): Location to which the train is permitted to proceed
and where target speed is zero.
Signal Directorate RDSO/Lucknow Page 10 of 56