Abstract
Diesel locomotive noise data accumulated over the past two years for hearing-damage assessment and land-use analysis are presented. Interior locomotive noise levels of the cab and engine areas were measured while the engine was developing all power levels was measured. Cab noise levels varied from 88 to 91 dBA at full power, depending on engine type, when the windows and doors were closed. Engine areas noise was found to be between 104 and 124 dBA at full power, depending on engine enclosure design. Extenal noise emissions were measured along an active east-west pair of tracks to determine land use classification for residences. This site typified enroute noise emission on flat agricultural terrain. Numerous observations were plotted versus distance from the tracks to derive an enroute emission model. Land use disposition was determined for future residences.
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