Emergency vehicle’ means a vehicle that is equipped with lights and sirens as required under ORS § 820.350 and 820.370 and that is any of the following:

(1) Operated by public police, fire or airport security agencies.

(2) Designated as an emergency vehicle by a federal agency.

(3) Designated as an emergency vehicle by the Director of Transportation. [1983 c.338 § 43; 1993 c.751 § 5]