To receive a train on unsignalled line, ________ authority is issued. A. T/369(3b) Pilot in MEMO B. T/369(2B) Pilot in MEMO C. T/369(4b) Pilot in MEMU D. T/369(5b) Pilot in MEMU

The correct answer is: A. T/369(3b) Pilot in MEMO.

T/369(3b) Pilot in MEMO is a train authority issued to receive a train on an unsignalled line. It is issued by the train dispatcher and authorizes the train to proceed to the designated point on the unsignalled line. The train must be accompanied by a pilot, who is responsible for ensuring that the train is safe to proceed.

The other options are incorrect because they do not authorize the train to proceed on an unsignalled line.

• Option B, T/369(2B) Pilot in MEMO, is a train authority issued to receive a train on a signalled line.
• Option C, T/369(4b) Pilot in MEMU, is a train authority issued to receive a train on an unsignalled line by a multiple unit (EMU).
• Option D, T/369(5b) Pilot in MEMU, is a train authority issued to receive a train on an unsignalled line by a diesel multiple unit (DMU).