(2)Prisoners on transfer shall be despatched by ordinary passenger train except when it may be necessary for special reasons to despatch them by mail train.Note 1. - The requisition should state whether "ordinary reserved for prison accommodation of one or more second class compartments of carriages with prison gratings or prison vans are required.Note 2. - When second class reserved accommodation is required for a party of prisoners and its escort, it should be seen that the number of compartments required is distinctly stated by the requisitioning officer, and that the number of compartments requisitioned will suffice for the number of prisoners composing the party taking the maximum number that can be allowed to travel in one compartment.