No official Railway Board PDF has been traced for this entry yet. The text below was read from the document held in the library.
| Type | Commercial Circular |
|---|---|
| Topic | freight |
| Currency | Currency not verified |
Based on the Conditional Line Clear Message for the vehicle to return (with / without Train attached), SM shall prepare CLCT [T/G 602 (UP) or T/H 602 (Down)] as the case may be.
<!-- Slide number: 1 -->  TOTAL INTERRUPTION OF COMMUNICATION (TIC) ON SINGLE LINE (S/L) [Ref :- SR.6.02 (ii)] Compiled by : - S Velraj, Inst/Optg, MDZTI, DWR, SWR <!-- Slide number: 2 --> # Objective <!-- Slide number: 3 -->  # <!-- Slide number: 4 --> When Line clear cannot be obtained through anyone of the following means of communications, in the order of priority as below, it is said to be Total Interruption of Communication. Block Instrument/ Track Circuit/ Axle Counters Block Telephone Station to Station fixed telephone, where provided Fixed Telephone such as Railway Auto phone or BSNL phone Control phone VHF sets <!-- Slide number: 5 --> The Train shall be stopped; LP & Guard shall be explained about TIC. The SM who has a Train to despatch shall open communication by sending anyone of the vehicles in the following order, Light Engine Train Engine Motor Trolley/Tower wagon accompanied by Guard/ off duty SM Trolley/Cycle Trolley/Moped Trolley accompanied by Guard / off duty SM Diesel Car/ Rail Motor Car/ EMU Empty Rake <!-- Slide number: 6 --> SM shall prepare T/B 602(if more than one Train waiting T/B602 + T/E 602) in Duplicate and handover it to LP / Driver/ Guard/ Motorman/ off duty SM with acknowledgement. T/B 602 contains, Authority to proceed without Line Clear. Authority to pass despatch signals at ON. A Caution Order, restricting the Speed 15 KMPH – Day/View ahead is clear. 10 KMPH- Night/ View ahead is not clear. <!-- Slide number: 7 -->  <!-- Slide number: 8 --> Walking Speed during Thick/ foggy /Tempestuous weather, piloted by two men with Hand danger signal & Detonators. To observe LC gates while approaching. Any other Caution available in the Section. Line clear enquiry message (for the waiting Train). Conditional Line Clear message with PN (for the LE/TE/Vehicle to return). <!-- Slide number: 9 --> In case of sending a Light Engine or Engine with Brake van, which has to continue further, there is no need to open communication, SM shall hand over T/B 602 duly scoring out last two portion of T/B 602. After sending the vehicle to open the Communication, SM shall not obstruct the line beyond the Outermost Facing Points until the vehicle returns from other Station. <!-- Slide number: 10 --> LP shall, Switch on Flasher Light while on run Whistle frequently Keep a sharp look out Stop at the FSS & Sound one long continuous whistle. <!-- Slide number: 11 --> SM shall receive the Engine(s)/ vehicle by taking OFF the signals or by other means. LP shall handover the T/B 602 to SM at the receiving end. Based on the Conditional Line Clear Message for the vehicle to return (with / without Train attached), SM shall prepare CLCT [T/G 602 (UP) or T/H 602 (Down)] as the case may be. <!-- Slide number: 12 --> SM shall also prepare Conditional Line Clear Reply Message in T/F 602 (for the enquiry) and hand over to the LP/ Driver. When coming back to the original Station LP shall run at Normal Speed and stop at the FSS and Train can be received by taking OFF signals or by other means. On getting Conditional Line Clear Reply Message (T/F 602) from the LP the SM shall prepare T/G 602 OR T/H 602 and start the Train. <!-- Slide number: 13 --> If two vehicles meeting in midsection, LP/ Drivers shall decide to which Train to proceed based on the following factors, Importance of the Train waiting. Distance to Travel Gradients involved Presence of Catch Siding If possible, the Engines shall be coupled. Otherwise they shall follow each other at a safe and adequate distance <!-- Slide number: 14 --> In case of an Engine returning without reaching the other Station, the T/B 602 shall be collected and cancelled by the SM. When a Train is detained in Midsection or at signals for more than 10 minutes, it shall be protected by placing One detonator at 250 meters and Two Detonators 10m apart at 500 meters. <!-- Slide number: 15 --> In case of Even F
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