(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.
Eff 6-11-90 (Emer.);
Rule promulgated under: RC Chapter 119.
Rule amplifies: RC 1547.52