Objective: Develop methods to characterize and mitigate harmful effects of non-exhaust (tire wear, brake wear, re-entrained road dust) motor vehicle pollutant emissions to water quality, air pollution, and environmental and…
An increasing number of DOTs and MPOs are considering greenhouse gas (GHG) emissions as part of the planning process, particularly in response to new federal programs addressing on-road GHG emissions.…
TNM significantly underestimates, and overlooks, the noise attenuation of 6’-8’ tall solid safety barriers (SSBs) because TNM distributes a large amount of noise energy tall in the vehicle profiles at…
The Observations leading to this proposal are 1) that a fibrous material (such as a long-bladed grassy bush or the fur of an animal) can noticeably reduce sound levels from…
Transportation agency managers have expressed concern that reduced mowing practices, such as those that benefit pollinators, may increase vehicle collisions with large mammals like deer, thereby reducing driver safety. Though…
Wildlife crossings such as overpasses, underpasses, or culverts designed to help animals avoid vehicle traffic can reduce wildlife-vehicle collisions, protect animals, and help maintain their habitat connectivity. While the benefits…
Spurred by information on the increasing urgency of mitigating climate change, as well as an injection of federal funding into carbon emissions reduction strategies, transportation agencies are increasingly developing and…
Comparisons of alternative build and no-build scenarios in project-level air quality analyses for NEPA and conformity typically focus on comparisons of emissions and/or ambient concentrations of specific pollutants, including greenhouse…
EPA suggested in response to a comment in the last MOVES Model Review Workgroup that grade-specific drive cycle data (second-by-second speeds) be used instead of model default data (which generally…
FHWA regulations for highway traffic noise (23 CFR 772) outline procedures for traffic noise analysis and noise abatement requirements for State DOT highway projects. The regulations stipulate that noise abatement…