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Full-Text Articles in Engineering
Use Of International Hydrographic Organization Tidal Data For Improved Tidal Prediction, Songwei Qi
Use Of International Hydrographic Organization Tidal Data For Improved Tidal Prediction, Songwei Qi
Dissertations and Theses
Tides are the rise and fall of water level caused by gravitational forces exerted by the sun, moon and earth. Understanding sea level variation and its impact currents is very important especially in coastal regions. With knowledge of the tide-generating force and boundary conditions, hydrodynamic models can be used to predict or model tides in coastal regions. However, these models are not sufficiently accurate, and in-situ tide gauge data may be used to improve them in coastal regions. The International Hydrographic Organization (IHO) tidal data bank consists of over 4000 tide gauge stations scattered all around the globe, most of …
Safety Effectiveness Of Red Light Treatments For Red Light Running, Carl Scott Olson
Safety Effectiveness Of Red Light Treatments For Red Light Running, Carl Scott Olson
Dissertations and Theses
Crashes resulting from automobiles running a red light are typically severe in nature. One way to try to reduce the number and severity of these types of crashes is by increasing the red clearance interval of a traffic signal. In Portland, Oregon, eight intersections received a variety of treatments including red extensions. Determining which treatment had what effect can be difficult to weed out. Using a combination of crash analysis and a model simulating an intersection with red extensions, this paper describes the estimated impact of red light running intersection upgrades and red extensions on crashes. By performing a variety …
An Empirical Study Of Particulate Matter Exposure For Transit Users At Bus Stop Shelters, Adam Moore
An Empirical Study Of Particulate Matter Exposure For Transit Users At Bus Stop Shelters, Adam Moore
Dissertations and Theses
Congested traffic corridors in dense urban areas are key contributors to the degradation of urban air quality. While waiting at bus stops, transit patrons may be exposed to greater amounts of vehicle-based pollution, including particulate matter, due to their proximity to the roadway. Current guidelines for the location and design of bus stops do not take into account air quality or exposure considerations. This thesis provides a unique contribution to roadside air quality studies and presents an innovative method for the consideration of bus shelter placement. Exposure to roadside pollutants is estimated for transit riders waiting at three-sided bus stop …