About Douglas Leaffer, PhD, PE
Doug Leaffer is a Professor of Engineering and Physics, and holds a PhD in Civil & Environmental Engineering (Environmental Health) from Tufts University (MA), where he previously earned an MSCE. His research interest is environmental/transportation noise and air quality impacts to population health. He has lectured on diverse topics including sensor technologies, air and noise pollution, and climate change at conferences and universities internationally. He is also a Licensed Professional Engineer (Civil)(Maine), a WELL Advisory (Sound), WELL AP and WELL Faculty.
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Fatalities at railroad crossings decreased by several hundred (2007-2022), attributable in part to Federally-mandated train horns at crossings. Yet sleep disturbance from railway noise contributes significantly to the burden of disease, causal to thousands of disability-adjusted life years (DALY).