Problem Statement The operation of steel-wheeled transit vehicles on steel rails may develop short-pitch corrugation of the rails. The interaction of the wheels rolling over the corrugated rails generates noise…
Problem Statement The specific noise issue in the vicinity of at-grade rail crossings is locomotive warning horn and crossing bell sounds, which cause significant noise impacts. The acoustic signatures of…
Problem Statement Vibration propagation through the ground is physically very similar to the propagation of noise through the air. Vibration and noise are similar in other respects as well; however,…
Problem Statement On a national scale, increased emphasis is being placed on expansion and refurbishment of fixed-guideway transit systems, especially steel rail-steel wheel formats. This has exacerbated the need for…
Problem Statement Transit vehicular warning horns are relatively omni-directional and can be a source of annoyance in areas of the community adjacent to rail lines. For example, train horns sounded…
Problem Currently, transportation goods and services are marketed, promoted, and sold with very little information related to their carbon footprint or other possible impacts to the climate. For example, the…
Per the Moving Cooler report, “eco-driving strategies can achieve cumulative greenhouse gas (GHG) reductions by changing the efficiency of individual driving behavior, if widely embraced and practiced.” The Moving Cooler…
Induced demand – also referred to as latent demand or the “rebound effect” – is the phenomenon that after supply increases, more of a good is consumed. In economic terms,…
Problem Induced demand – also referred to as latent demand – is the phenomenon that after supply increases, more of a good is consumed. In economic terms, the demand for…
TERI Administrator Note (May 2011): FHWA has a project underway that is addressing these issues. (John Davies is FHWA contract point.) Problem One of the approaches for reducing transportation-related greenhouse…