Communications in the PTA Network must be:
clear, brief and unambiguous;
relevant to the task at hand; and
agreed as to its meaning before being acted upon.
Communications may be spoken, written or electronic transmissions.
Communications must use the 24 hour system of time.
Communication equipment used for railway operations must be tested for correct operation:
for Rail Traffic, prior to entry on to the PTA Network; and
for Work on Track, prior to starting work.