20. Subject to any special directions by the Court, the costs of every witness called to give evidence in every public prosecution shall, in the case of witnesses who are not government officials, consist of an allowance for attendance (including the time necessarily occupied in travelling to and from the Court) and of an allowance for transport according to the rates laid down in Appendix D to these Rules:
Provided that no allowance for attendance shall be paid to any witness who resides or carries on his occupation within a radius of one mile from the Court unless the Court makes a special direction for the payment of such allowance. The Court shall not make any such direction save where it is satisfied that the witness has suffered monetary loss:
Provided also that no allowance for transport shall be paid to any witness who resides within a radius of three miles from the Court unless the Court specially directs the payment of such allowance.
