TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2233 consists of 21 papers that explore integrated bus information systems, the effects of operational efficiency on pollutant emissions, corridor-level air quality analysis of freight movement, comparison of greenhouse gas and criterion pollutant emissions, and operating variables on particle number emission rates. This issue of the TRR also examines coordinated signal control, the Port Authority of New York and New Jersey criterion pollutant and greenhouse gas emission inventory, particle number emissions from 2010 hybrid and comparable conventional vehicles, effects of a policy measure on population exposure to nitrogen dioxide, characterization of on-road emissions of compressed natural gas and diesel refuse trucks, and characteristics of low-speed vehicle-specific power distributions on urban restricted-access roadways. In addition, other topics addressed include air quality–related mortality impacts of different transportation modes, estimating truck traffic speed and its application to emission inventory modeling, costs of automobile air emissions, ecological assessment process and credit system for highway capacity projects, tire noise generation and propagation over porous and nonporous asphalt pavements, determining end limits of quieter pavement projects, effects of aging on tire–pavement noise generation, reflections from highway noise barriers and use of absorptive materials, and an evaluation of variables affecting sustainable highway design. (Author/publisher)
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