Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 41 for “"traffic operations"”.
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Study of traffic operations on Massachusetts route 128
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Civil and Sanitary Engineering, 1958.
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Evaluation of Traffic Operations at Intersections in Malfunction Flash Mode
During a signal malfunction, traffic signals are operated in the flash mode. During this event, drivers are presented with one of two possible scenarios: (1) flashing yellow on the major street and flashing red on the minor street or (2) flashing red on all approaches. Yellow/red flash is typically …
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Optimization of airport terminal-area air traffic operations under uncertain weather conditions
… System, especially during summer. Although Air Traffic Flow Management algorithms exist to schedule and route traffic in the face of disruptions, they require reliable forecasts of airspace capacity. However, there exists a gap between the spatial and temporal accuracy of aviation weather …
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Human factors in the design of displays for traffic operations control centers
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1994.
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Evaluation Of The Potential Benefits To Traffic Operations At A Toll Plaza With Express Etc Lanes
… ETC lanes, was a great benefit to the overall traffic operations for the University Mainline Toll Plaza in Orlando, Florida.
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Assessing the Impact of Bicycle Infrastructure and Modal Shift on Traffic Operations and Safety Using Microsimulation
… in VISSIM using existing travel demand and traffic design conditions (i.e., the baseline or Scenario 0). A total of three different conditions: existing, proposed, and alternative conditions, were modeled to see the effectiveness of bike infrastructure design improvement and expansion. Three …
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Modeling of Airport Operations Using an Object-Oriented Approach
… approach to model airport ground network traffic operations. A generic modeling library is developed as a tool kit to model the basic traffic operations in the airfield using an object-oriented approach. The proposed generic modeling library for airfield operations is a collection of …
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Investigation Into Free Flight Impact On Air Traffic Control
This thesis deals with innovative concept of air traffic operations such as Free Flight. First, a baseline is established to determine how controllers operate under the current operation guidelines. Then flight trajectories are developed for different alternatives to the Free Flight operational …
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Identification of risk factors for crashes involving older drivers
… to evaluate the role of geometric features and traffic operations related characteristics on the involvement of the older drivers in motor vehicle crashes. Examples of potential factors influencing older driver crashes include intersection/roadway geometrics, type of traffic control, traffic …
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Applications of ASDE-X Data to the analysis of airport surface operations
… research has gone into studying airport surface operations. In recent years a surface surveillance system called Airport Surface Detection Equipment, Model-X (ASDE-X) has been installed at over 30 airports in the US as a safety device. The applications of the data being captured by these systems …
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Evaluating and Forecasting the Operational Performance of Road Intersections
… efficiency by continuously monitoring traffic conditions and enabling situational awareness of vehicle drivers. Towards this end, we design, develop and evaluate a system for evaluating and forecasting the operational performance of road intersections by mining streams of V2I data. Our …
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Optimized scheduling of highway work zones
… usually require lane closures and disrupt traffic operations. Because of budget constraints, project deadlines, and the resulting traffic impact, the objective of this dissertation is to improve the efficiencies of traffic operation and maintenance work, and minimize the total project cost …
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A stochastic mesoscopic cell-transmission model for operational analysis of large-scale transportation networks
… by Daganzo in 1994 was not fully exploited as an operations model for analysis of large-scale traffic networks. Because of its macroscopic / mesoscopic features, CTM offers calibration and computational advantages over microscopic models. This study presents a series of enhancements to the …
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Operational effects of weigh-in-motion systems in weight enforcement
The effects of weigh-in-motion (WIM) systems on traffic operations and weight enforcement were compared and evaluated. The systems studied included high speed WIM, medium speed WIM and conventional static scales alone. The major measurements of effectiveness were traffic delay, queue, and the …
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Mitigating emissions and energy consumption for urban transportation networks : simulation-based signal control strategies
Microscopic urban traffic simulators embed the most detailed traveler behavior and network supply models. They represent individual vehicles and can therefore account for vehicle-specific technologies. These simulators can be coupled with instantaneous energy consumption and emissions models to …
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Simulation-Based Study to Quantify Data-Communication Benefits in Congested Airport Terminal Area
… this study was to evaluate the impact of the air traffic controller-to-pilot communication standard known as CPDLC or Data-Communication on the future air traffic operations. The impact was evaluated from the double viewpoint of airport delays and air traffic controllers' workload. RAMS simulation …
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Ramp control strategies and geometric design implications of high-speed automated transportation systems
… factors, computer science, communications and operations research. This research deals with automatic freeway traffic operations including ramp guidance and merging which is an important aspect of Intelligent Vehicle Highway Systems (VHS) Technology. An existing traffic flow model is utilized …
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A GIS-based traffic infrastructure management system for pavement markers and markings
… They play a vital role in facilitating safe traffic operations on roadways. The management of markings and markers is critical to public agencies responsible for roadway operations and traffic safety. However, few agencies have automated or computerized systems to maintain these inventories …
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