The environmental performance of public transportation services plays a key role in improving air quality in urban areas. Replacing vehicles’ current engines with innovative propulsive systems may be an effective…
Investigate the potential benefits of converting traditional cross intersections to modern roundbouts.
Using data from one state, conduct a statistical analysis to show the degree to which vehicle miles traveled and 1) accident rates and 2) cost of accidents correlate. Auto insurance…
Background Truck freight operations are a major source of air pollutants, including criteria pollutants, toxic air pollutants and greenhouse gas emissions. Although the 2008-2010 recession has led to recent reductions…
Background The concurrent introduction in the past year of models (MOVES2010 and AERMOD) and guidance new to project-level “hot-spot” analyses poses significant challenges for state DOTs and other agencies with…
TERI Administrator Note – Selected as FY12 NCHRP Project 25-38 RESEARCH PROBLEM STATEMENT In the March 2, 2010 Federal Register (FR), EPA approved and announced the availability of the Motor…
I. RESEARCH PROBLEM STATEMENT There is a renewed interest nationally and internationally in vehicular emissions, particularly as it relates to the formation of greenhouse gases. To date, there has been…
TERI Administrator Note: Selected as NCHRP 25-25 (70) Screening level procedures for quantitative mobile source air toxics (MSATs) analyses for transportation projects are needed to provide state and other transportation agencies…
Traffic flow has many adverse effects on its surroundings. Efforts to improve traffic operations traditionally focus on some of these factors, such as trip time and stop delay, and try…
Ultrafine particles (UFP) can be defined as having at least one dimension that is less than 100 nanometers. Because of their dimensions, they exhibit unique properties that affect atmospheric transport…