#TIC on D/L (#Total Interruption of Communication on Double Line) - Lesson 89

1. What is TIC - If all the following six authorised means of Communication for taking line clear fail at a time then this situation is called TIC (i) BI/AC/TC (ii) Block Telephone attached to Block Instrument (iii) Station to Station Fixed Telephone (Hot Line) (iv) Railway Auto Phone/BSNL Land Line (v) Control Telephone (vi) VHF (Very High Frequency) Set 2. Authority - T/C 602 Speed Restriction - 25/10 KMPH Gap (Time Interval) - 30 minutes for each train 3. T/I 602 - Exchange of Message by both SMs on restoration of any one of the Authorised means of Communication