For the purpose of rules 1501:47-2-32 to 1501:47-2-36 of the Administrative Code, except where the context otherwise requires, the definitions are as follows:

(A) "Whistle" means any sound signaling appliance capable of producing the prescribed blasts and which complies with specifications in annex III of the "I.N.R.A."

(B) "Short blast" means a blast of about one second duration.

(C) "Prolonged blast" means a blast of from four to six second's duration.