Abstract: Environmental or air-quality effects of Intelligent Transportation Systems (ITS) are very difficult to measure. Some researchers have attempted to quantify the effects of individual ITS application on emissions; yet, the ...

Abstract: Highway noise control has been practiced in the United States for more than 10 years, as a result of direction provided by the Federal Highway Administration. Through 1980, more than 100 million dollars had been spent to ...

Abstract: A model for the prediction of noise levels from highway construction operations has been developed under sponsorship of the Federal Highway Administration (FHWA). Noise sources are geometrically represented as points, lines ...

Abstract: The high cost of conventional highway noise abatement methodology (i.e., free‐standing walls) has made mitigation of many impacted sites economically infeasible. A solution that may prove more economically reasonable for ...

Abstract: In September 1999, the writers began a study for the Arizona Department of Transportation to develop Arizona-specific Reference Energy Mean Emission Levels. This study was conducted to determine if the noise emission ...

Abstract: Environmental analysis of transportation systems is a comprehensive and demanding task. The environmental planner is required to carefully and objectively examine project data provided by transportation planners and ...

Abstract: Many local agencies responsible for the sewage treatment process manage a large number of small treatment facilities that serve low-density residential areas. This process is often noisy and, as a result, frequently generates ...

Abstract: Of all the stages of expert systems construction, none is more critical than knowledge acquisition. This is particularly true in instances where domain experts such as civil engineers develop expert systems themselves, ...