2703. EXEMPTIONS: VEHICLES USING ONLY RAILS AND TRACKS

2703 EXEMPTIONS: VEHICLES USING ONLY RAILS AND TRACKS 2703.1 Sounds emanating from vehicles using only rails and tracks shall, to the extent indicated, be exempt from the specific noise limitations contained in § 2701 of this chapter; Provided, that the exemption shall not preclude enforcement under any other section of Chapters 27 and 28 of this subtitle. 2703.2 Vehicles propelled only upon rails and tracks shall be exempt at all times. 2703.3 Railroad cars operated by the Washington Metropolitan Area Transit Authority shall be operated in a manner so as not to emit maximum noise levels in excess of those established in the following table when measured at a distance of one hundred feet (100 ft.) from the center line of the track, or at the nearest property line, whichever is the greater distance from the center line of track. ZONE MAXIMUM NOISE LEVEL Residential, special purpose, or waterfront zone 75 dB(A) Commercial or light- manufacturing zone 80 dB(A) Industrial zone 90 dB(A) 2703.4 In taking a measurement pursuant to § 2703.3, the slow meter response of the sound level meter shall be used, and the measurement shall be taken approximately five feet (5 ft.) above grade. SOURCE: Section 5 of the District of Columbia Noise Control Act of 1977, D.C. Law 2-53, 24 DCR 5293, 5305 (December 30, 1977).