Exception. This regulation does not apply to devices used solely for the purpose of warning, protecting, or alerting the public of the existence of an emergency situation. Snowmobiles. An individual may not operate a snowmobile on Department lands that produces a maximum noise exceeding the noise level limits set forth in §B(2) of this regulation, measured at a distance not less than 50 feet from the point of operation under test procedures established by the SAE. Noise level limits and the effective dates for enforcement are: Motorcycles and Other ORVs. An individual may not operate a motorcycle or other ORV on Department lands that produces a maximum noise exceeding the noise level limits set forth in §C(2) of this regulation, measured at a distance not less than 50 feet from the point of operation under test procedures established by the SAE, ANSI, or ASTM. Noise level limits and the effective dates for enforcement are: