49 C.F.R. § A to Part 210

Current through September 30, 2024
Appendix A to Part 210 - Summary of Noise Standards, 40 CFR Part 201

Paragraph and sectionNoise sourceNoise standard-A weighted sound level in dBNoise measure1 Measurement location
All Locomotives Manufactured on or Before 31 December 1979
201.11(a)Stationary, Idle Throttle Setting73Lmax (slow)30 m (100 ft)
201.11(a)Stationary, All Other Throttle Settings93......doDo.
201.12(a)Moving96Lmax (fast)Do.
All Locomotives Manufactured After 31 December 1979
201.11(b)Stationary, Idle Throttle Setting70Lmax (slow)Do.
201.11(b)Stationary, All Other Throttle Settings87......doDo.
201.12(b)Moving90Lmax (fast)Do.
201.11(c) and 201.12(c)Additional Requirement for Switcher Locomotives Manufactured on or Before 31 December 1979 Operating in Yards Where Stationary Switcher and other Locomotive Noise Exceeds the Receiving Property Limit of65L90 (fast)2Receiving property
201.11(c)Stationary, Idle Throttle Setting70Lmax (slow)30 m (100 ft)
201.11(c)Stationary, All Other Throttle Settings87......doDo.
201.12(c)Moving90Lmax (fast)Do.
Rail Cars
201.13(1)Moving at Speeds of 45 mph or Less88......doDo.
201.13(2)Moving at Speeds Greater than 45 mph93......doDo.
Other Yard Equipment and Facilities
201.14Retarders83Ladjavemax (fast)Receiving property
201.15Car-Coupling Operations92......doDo.
201.16Locomotive Load Cell Test Stands, Where the Noise from Locomotive Load Cell Operations Exceeds the Receiving Property Limits of65L90 (fast)2Do.
201.16(a)Primary Standard78Lmax (slow)30 m (100 ft).
201.16(b)Secondary Standard if 30-m Measurement Not Feasible65L90 (fast)Receiving property located more than 120 m from Load Cell.

1 Lmax = Maximum sound level; L90 = Statistical sound level exceeded 90% of the time; Ladjavemax = Adjusted average maximum sound level.

2 L90 must be validated by determining that L10-L99 is less than or equal to 4dB (A).

49 C.F.R. §A to Part 210

48 FR 56758, Dec. 23, 1983; 49 FR 1521, Jan. 12, 1984