543.16  RAILROAD NOISE.
   (a)   The maximum sound pressure levels for railroad operations shall not exceed the following as measured in accordance with the criteria set forth in subsection (b) hereof.
 
dB(A)
Locomotives completed on or prior to Dec. 31, 1979
73 at idle
93 at all other throttle settings
96 moving at any speed
Locomotives completed after Dec. 31, 1979
70 at idle
87 at all other throttle settings
90 moving at any speed
Railcars
88 up to and including 45 mph
93 at greater than 45 mph
   (b)   Maximum sound pressure levels for railroad operations shall be measured as follows:
      (1)   For all locomotives operating under stationary conditions, measurement shall be by fast meter response at 100 feet from the geometric center of the locomotive and perpendicular to the centerline of the track.
      (2)   For all locomotives operating under moving conditions, measurement shall be by fast meter response at 100 feet from the centerline of any track which exhibits less than a two degree curve.
      (3)   For all railcar operations, measurement shall be by fast meter response at 100 feet from the centerline of any section of track which is free of special trackwork, bridges and trestles, and which exhibits less than a two degree curve.
   (c)   Measurement of maximum sound levels for all locomotive and railcar operations shall be taken in accordance with standards set forth by the Environmental Protection Agency in the Code of Federal Regulations, Volume 40, Part 201.
(1964 Code Sec. 99.16)