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Tender invited for Development of Train Collision Avoidance System

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ISO 9001: 2008 Effective from 18.06.2012 RDSO/SPN/196/2012 Version 3.1.1<br />

Document Title : Specification <strong>of</strong> <strong>Train</strong> <strong>Collision</strong> <strong>Avoidance</strong> <strong>System</strong><br />

Field No. <strong>of</strong> bits<br />

0 bits i.e.<br />

field not<br />

required if<br />

Value Description<br />

TO_SPEED<br />

= 111<br />

----- -----<br />

DIFF_DIST_TO<br />

(unrestricted<br />

)<br />

11 bits, if<br />

TO_SPEED<br />

= other than<br />

111 (Speed<br />

Restriction)<br />

xxx xxxxxxxx Distance in meters <strong>of</strong> "Turn-out" fro m "Signal on Approach"<br />

PREFERRED_TX_WINDOW 6<br />

00 0000 Not nominated<br />

xx xxxx Transmit Window in 2 second interval<br />

INFO_LOCO_CNT 7 xxx xxxx Number <strong>of</strong> Locos whose in<strong>for</strong>mation is embeded in the packet<br />

SOURCE_LOCO_FRAME_NUM 15 0x xxxxxxxxxxxx FRAME_NUM when the Loco / <strong>Train</strong> transmitted the in<strong>for</strong>mation<br />

SOURCE_LOCO_ID 14 0x xxxxxxxxxxxx ID <strong>of</strong> the Loco / <strong>Train</strong> whose in<strong>for</strong>mation follows.<br />

ABS_LOCO_LOC 22<br />

xx<br />

Absolute Location <strong>of</strong> the Loco / <strong>Train</strong> in SOURCE_LOCO_FRAME_NUM<br />

xxxxxxxxxxxxxxxxxxxx<br />

00 0000 0000 Invalid / unidentified<br />

TRAIN_LENGTH 10<br />

xx xxxxxxxx other<br />

<strong>Train</strong> Length in Meters<br />

than 00 0000 0000<br />

TRAIN_SPEED 8<br />

1111 1111 <strong>Train</strong> Speed unidentified<br />

xxxxxxxx <strong>Train</strong> Speed in Meters<br />

00 Traffic Direction not established / unidenfied<br />

TRAFFIC_DIR 2<br />

01 Traffic Direction in Up direction<br />

10 Traffic Direction in Dn Direction<br />

11 Reserved <strong>for</strong> future use<br />

Signal Directorate RDSO/Lucknow Page 49 <strong>of</strong> 56

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