When the Loco pilot should contact with SM on telephone while IBS in "ON" position?
When the Loco pilot should contact with SM on telephone while IBS in "ON" position? Correct Answer After 1 miutes in day and 2 minutes in night
When the Loco pilot should contact with SM on telephone while IBS in "ON" position? Correct Answer After 1 miutes in day and 2 minutes in night